New ‘Select Fire’ Grenade In Development

The scientist-warriors at the Picatinny Arsenal in New Jersey are working to bring the hand grenade into the 21st Century. With the flip of a “switch”, U.S. soldiers will be able to decide whether to use fragmentation or concussive forces – all from one grenade.

Researchers at the Army Armament Research, Development and Engineering Center are designing the ‘ET-MP’ with a fully electronic switch will allow detonation times to be programmable down to the millisecond. Also, each grenade will be incapable of detonating until armed.

Worth noting is that the new design will be ambidextrous, meaning lefties no longer have to hold and throw their grenades upside down. ARDEC is hoping to have the ET-MP available for issue in 2020.

ARDEC Public Affairs:

PICATINNY ARSENAL, N.J. — Engineers at Picatinny Arsenal are working on the first new lethal hand grenade in more than 40 years, which is designed to give greater flexibility to the warfighter.

The multi-purpose hand grenade design will provide both fragmentation and blast overpressure more effectively and safely than its legacy counterparts. Once fielded, Soldiers will be able to select and use a hand grenade with different effects simply by flipping a switch.

Over the past five years, Picatinny engineers have been collaborating with Infantry School representatives, hand grenade cadre, as well as active duty Soldiers and Marines, to determine warfighter needs regarding hand grenades.

Our warfighter lost the capability of using an alternate lethal hand grenade when the MK3A2 concussion grenade was taken out of service in 1975 due to an asbestos hazard, leaving the M67 fragmentation grenade.

The grenade development at Picatinny is being performed by engineers with the U.S. Army Armament Research, Development and Engineering Center, or ARDEC.

Science and technology funding has allowed ARDEC to spearhead the design effort to develop the Enhanced Tactical Multi-Purpose (ET-MP) hand grenade, the Army’s next generation lethal hand grenade. The grenade will be designed to meet performance requirements required for close combat engagements in which the effects must be lethal.

ARDEC is working in cooperation with the Maneuver Center of Excellence at Fort Benning, and the Program Manager for Close Combat Systems, to insert critical technologies with Soldier-centric designs to improve safety and ease of use.

According to Jessica Perciballi, ARDEC Project Officer for ET-MP, U.S. Army, Grenades & Demolitions Division, ET-MP represents the first hand grenade that can be tailored to the mission.

“Soldiers will not need to carry as many types of hand grenades,” she said.

“They are currently carrying one M67 grenade that provides lethal fragmentation effects. With the new multi-purpose grenade, they can carry one ET-MP grenade and have the ability to choose either fragmentation or concussive effects desired for the situation,” Perciballi said.

Another feature is that the grenades are designed for ambidextrous use, meaning that they can be thrown with either hand. Current grenades require a different arming procedure for left-handed users.

“Not only will ET-MP provide additional capabilities and lethality to the warfighter, it will also be the first Army Fuze Safety Review Board and Insensitive Munition-qualified lethal grenade in the Army’s portfolio,” Perciballi added.

According to Matthew Hall, Grenades Tech Base Development Lead, “The request for a multi-purpose grenade came from the warfighter in 2010. Research began almost immediately. The science and technology funding to move forward with a project came in fiscal year 2013.”

“We received direct input from the Army and Marine Corps early on, which was critical in ensuring the new arming and fuzing design was user friendly,” Hall said.

“With these upgrades in the ET-MP, not only is the fuze timing completely electronic, but the detonation train is also out-of-line,” Hall added. “Detonation time can now be narrowed down into milliseconds, and until armed, the hand grenade will not be able to detonate.”

According to Hall, the current plan for ET-MP is to transition the new grenades to Project Manager Close Combat Systems in Fiscal Year 2020. That organization is also located at Picatinny Arsenal.




LE – Science – OSINT.
On a mission to make all of my guns as quiet as possible.
Twitter: @gunboxready
Instagram: @tfb_pete


  • BattleshipGrey

    Now they just need to figure out how to make it stick to stuff and Halo will have come one step closer to reality

    • DIR911911 .

      axle grease and socks

    • Major Tom

      Self-deploying clamps or blades that dig in to everything.

      Like these:

      • Bierstadt54

        Pretty impressive, but methinks I’ll still take 3 or 4 regular grenades over – whatever that is. Unless I really, really need a small mace that also explodes.

      • LCON

        Did the Klingons Design a Hand grenade?

    • Sunshine_Shooter

      They tried developing sticky grenades IRL. They stuck to things they were thrown at, but they also had a tendency to stick to the thrower.

      • Anomanom

        Why didn’t they put a handle on it, like the potato masher. That is to say, don’t hold it by the sticky part.

        • gunsandrockets

          They did put a handle on it. It still was a nightmare to use!

          • Tom

            As gunsandrockets said it had a handled but in order to get what is a relatively heavy object to stick (it was designed to be stuck to tank tracks) securely and quickly they had to use a very strong and quick curing adhesive so the smallest mistake would see the grenade stick to the user/their webbing or other things.

      • “Once he is armed, Mr. Grenade is no longer your friend.”

    • MrFN

      A bomb that sticks, sticky bomb!

      Just watched that movie, forgot how a lot of it is depression in visual form.

  • Tritro29

    Who throws the grenade upside down? Is this for real? Just rotate the grenade on same axis…

    • Pete – TFB Writer

      Then the pin is on the wrong side.

      • AK

        I’m sure some bubba lefty already modded his nades somewhere…just pull out and reverse the pin. Darwin awards calling… 😛

      • Tritro29

        On a US grenade? I’m sorry to hear that. Reminds me of Space Pen syndrome.

        • PK

          Перфекционизм: когда лучшее – враг хорошего…

        • Warren Ellis

          You mean the Space Pen both NASA and the USSR bought?

          • Tritro29

            … Nope I meant the one NASA tried to develop before cutting its losses and buying the Bullet Pen…

    • PK

      Every lefty who doesn’t want to get reamed for handling grenades wrong, to start.

      • Tritro29

        Seems like an US/NATO issue. Has to do with shape?

        • PK

          The pin and ring are designed to be drawn out from right to left to arm the grenade. The idea is that the spoon is held down by the thumb, web of the thumb, or palm, while the ring is pulled out with the left hand.

          Using the grenade in the other hand, the spoon is now held by the fingers alone, which can expose a fairly serious design problem with the WWI vintage fuze design, which is that if it isn’t held down firmly, the striker can flip and swing and strike the primer, starting the powder train, while the spoon mostly seems to be in place and the grenade still safe to hold.

          Reasonably calm use on the range shows this isn’t an issue, as you can hear the primer pop, you notice the spoon moving, and so on. In combat conditions, it can go unnoticed, leading to serious problems for the user.

          To prevent this from happening, left-handed individuals are instructed to hold the grenade upside-down in the left hand, so that the spoon is still held by the thumb, web of the thumb, or palm.

          • Tritro29

            I perfectly understand what you mean, as I have done hand-grenade training, it’s just that I was taught to rotate slightly the grenade on my left hand, which would still pot the spoon/lever on my palm and then grab the pin, with my right index, it really needs nothing special, the limonka is really small. Just interesting that in the US you go upside down.

          • PK

            I agree, that’s certainly easy enough to do, but for whatever reason (perhaps ensuring soldiers retaining the ability to handle grenades safely with gross motor skills under combat conditions) that’s not the way left-handed troops are trained to deploy grenades in the US military. Or at least, it didn’t used to be, I’m not sure if it is presently.

          • We want throwers (left or right handed) to be holding down the spoon with their THUMB, because it is the least likely way they will “milk” a grenade and not notice. Remember, M67 frags are round, like little wild apples – it’s *easy* for them to roll around a little against the palm. Not a problem, as long as the knuckle of the thumb is what’s holding the spoon down.

            But that would put the pin going in an awkward direction for them to pull it (they’d be pulling outboard and to their shoulder – not inboard towards their core.)

            In order to pull the pin out smartly, all that requires lefties to flip the grenade fuze-down in their left hand. At which point, it works exactly for them like it does for a right hander — only the grab the pin at the bottom of their hand, not the top.

          • Tritro29

            Still it is a whole trip and return, while a little smarts would do the job just as well. We’ll put that on cultural differences and safety being a relative notion in Russia.

          • Precisely

    • Ron

      Lefties are suppose to, in order prevent the spoon from being against the fingers instead of the meaty portion/palm. The thought behind the practice is it easier to accidently milk the grenade if you have spoon against the fingers, because the lower fingers only have to move a bit to let the spoon move a sufficient distance to let the striker hit the arming cap. While if it is against the palms there is more uniform pressure holding the spoon down

      • Tritro29

        I’m left handed, I was taught in “break in” to simply rotate the RGD-5/RGO in my palm pull the pin release the lever and launch the “limonka”. It takes a couple of times to understand why, but once your brain understands it, you have no issue.

      • Jeff82

        In my day you were taught to form a “+” with the spoon and the throwing hand thumb. Grenade would be right-side up for righties and upside down for lefties. Doing this would position the pull-ring properly for the off-hand index finger.

  • Ron

    Because of risk aversion, units will still find a way to screw it up, I can just imagine the taping of grenades to prevent accident, sort of accidents that will occur with a new design.

    • 11b

      No, you’ll first dummy cord the grenade to your person, so you don’t lose it. Then the switch will be dummy corded to the grenade body. Finally, a risk assessment will be conducted to determine if the grenades should be used, at which point they will sit in inventory for 25 years.

  • A bearded being from beyond ti

    We need grenades with Mlok cuts.

    • Bert

      I find your comments on most articles hilarious, this one included.

      • A bearded being from beyond ti

        Well thank you Bert.

    • Anomanom

      Yes! Attach to rifle, set for impact detonation, activate berserker mode.

      • A bearded being from beyond ti

        Put a bipod and scope on it for those long-range throws.

    • mbrd

      oooh! to replace my obsolete quad rail grenades!

  • Dougscamo

    “Set phasers to stun”. Seriously, I can see all kinds of problems for a troop if the ROE or squad leader says a concussion grenade is needed and the fragmentation setting is activated. If you are THAT close to the action then mistakes are going to be made….and the troop doesn’t need the criticism or worse of someone who says “You should have set the grenade to (fill in the blank)”.

    • CommonSense23

      Both setting are lethal.

      • Pete – TFB Writer

        Thanks. Was just coming here to post this.

        • Dougscamo

          Okay, went back and caught the “lethal” line. Hey, it was early and the coffee hadn’t kicked in 🙁

          • Pete – TFB Writer

            Not judging. I thought the same thing at first. Flashbang and grenade all in one? Damn.

          • Dougscamo

            No offense taken. Forgot to mention that the sun was in my eyes….

          • Chris

            The standard concussion grenade currently used by US forces, the Mk3, is quite lethal itself. It pretty much concusses you to death, especially indoors.

      • Dougscamo

        My bad. Got too many threads going on and replied to Pete first. Think I’ll go outside and do something constructive…like hit the reloading shack and crank out some playthings.

  • TheNotoriousIUD

    Who came up with this?
    A team of tactical lawyers?

  • ReadyorNot

    I’d rather have a choice for time delay personally

    • Blake

      Did you not read the article at all? You can set the delay time down to the millisecond.

      • CommonSense23

        No where does it state the end user will have control of the delay time.

        • Jeff82

          Seems to me the end user is in the best position to determine and apply proper delay time.

          • CommonSense23

            While that would be ideal for some. I highly doubt they are going to hand out grenades that can accidently be set to go off as soon as the spoon flies.

          • Jeff82

            I didn’t say that, but it would be useful in setting booby traps.

          • You do NOT want PVT Snuffy choosing what delay.

          • Jeff82

            As a joke that is funny! In reality if pvt snuffy can’t be trained then the entire army system is impossible.

          • I’m guessing you never served.

            Soldiers tend to choose the wtong settings in things like this, either being too aggressive or too timid.

            Hell, in WWII, they found they couldn’t trust highly.trained *Commando troops* to select a fuze length for grenades – the super short fuzes the Commandos demanded turned out to be *too short*.

            That’s also why they eliminated the adjustable gas regulator on the M249. PVT Snuffy *invariably* turn it to the “adverse” setting (intended for severe fouling) to make the gun run faster, which increases breakdowns and reduxes reliability. But it sure feels cool to run a SAW like it’s an MG42, so Joe does it.

  • Sunshine_Shooter

    Not a fan. Grenades are simple. Pull pin, throw, repeat as necessary. Selecting a firing mode? Programmable detonation times? Sounds like a problem waiting to happen. There is a reason cops do not mix lethal and non-lethal rounds in the same shotgun.

    • CommonSense23

      They are both lethal setting.

      • Sunshine_Shooter

        Not the point. You throw it and expect a frag and it may be set to concussion, or the other way around. Both may be lethal but they are different for a reason, and you now have the possibility of using the wrong setting and you don’t know until it goes off wrong.

        • CommonSense23

          Or you prep your grenades like you should and make it dirt simple so you can look at it on NODs and instantly know what it is.
          You are not programming the fuse time. You are just setting one of two functions. You know how simple this is compared to a lot of equipment we use these days?

          • Sunshine_Shooter

            Well, compared to the grenades you are currently using, more complex. It’s one more point of failure and it doesn’t give you more capability than you currently have.

    • 11b

      Concussion is ‘offensive’ and frag is ‘defensive’ (you don’t want to frag yourself). It makes sense for SOF and other groups with a lot of training, but for big Army…. Don’t think line units would get enough range time to know how to use it. My guess is it will stay SOF only.

      • R3

        Breach, bang, and clear suddenly becomes breach, frag, and clear with a little adrenaline mixed with tunnel vision.

      • That’s why I have long advocated for a blast (“offensive” or “concussion”)grenade with an easily removable frag sleeve. Want frag? Just use as issued. Want concussion? Strip off the sleeve – grenade is now skinnier and likely has a different outside texture (probably smooth). Even PVT Snuffy can figure that out in the dark.

  • AK

    I wonder how this thing works…Must be a two-core design, where you have a “frag core” inside and a “concussion core” outside, then by varying the det.times you get one or the other. I would imagine the results are a compromise (ie. will get some frag with concussion setting, and shrapnel is not quite as effective due to lower amount or lower speeds in frag mode as a traditional frag nade). I also wonder about the added mass.

    • Bierstadt54

      I want to know too. Previous dual mode designs had frag sleeves that slid over the grenade explosive core. This is a nice idea but I am a bit skeptical they will be able to make something useful.

    • Ron

      Potentially if set for concussion, the explosive core is ejected right before the main charge tdetonates, if set for fragmentation the core functions inside the jacket.

  • J.T.

    Multi-purpose/Universal – Something that is able to do multiple things but is good at none of them. It seems like all this reliably accomplish is increasing the price of grenades several times over.

  • gunsandrockets

    multi-purpose? Does not seem plausible. At the least the non-frag function would be mediocre compared to a purpose built grenade.

    • Blake

      Seems pretty plausible to me, considering the difference between concussion and frag is pretty much only the existence of fragmenting metal.

      • roguetechie

        So… Where do you put the metal when you want just the concussion?

        • Jeff82

          Exactly. If it is metal. Maybe they are working with some kind of new material that can change from hard to soft (or vice versa) before it is thrown.

          • roguetechie

            My issue is, while I can think of ways to do it… They’d all ruin the basic idea behind hand grenades. That being that they’re cheap, able to be identified readily by touch alone, and used quickly with extremely low failure rates in situations where hundredths of a second count!

            What would REALLY impress me is something like an insensitive munitions based V50 mini grenade cheap enough to practice with often.

            As well as a few other mechanically sound and highly effective grenade types designed specifically to be light cheap and single purpose.

            I see this as one more step down the path of the one size fits all army with too much emphasis on multipurpose and making it easy on the logistics guys to the detriment of actual war fighters.

            Realistically this was a good strategy in the run up to world war 2 but is inexcusable now. Literacy rates, the bar code, and the much more complicated battlefield we face now make it inexcusable.

            We’re introducing complexity where stuff needs to be simple and simplifying stuff that shouldn’t be simplified. With the enormously lopsided tooth to tail ratio we already have this just doesn’t make sense.

        • Gary Kirk

          To be blunt, I find this to be a ridiculous waste of time, however.. they could with modern advancements in shaped charges and electronic ignition. Direct both impulse, and detonation charge, in any way deemed necessary.. Still, it completely over complicates the good OLD hand grenade

  • joe

    So, they’re working on the RoboCop version of the DM51?

  • Mmmtacos

    Things I didn’t know I wanted to hear when I woke up this morning:

    1. “Select fire grenade”

    • CS

      Imagine the unwanted casualties of mistakenly using the wrong mode. Next thing you know, they’ll be putting drop safeties and redundant safeties switches on grenades. Ooops.

      • Gary Kirk

        Glock style trigger safety on the grenade.. You must squeeze the trigger to make the grenade go off.. But hey, there’s no external safety so it’s good..

        • Some Guy

          …Glock already puts trigger safeties on grenades

          • mbrd

            heh heh…

      • Vanns40

        Exactly what I was thinking. “Hey, it was dark, I couldn’t read the marking clearly, oops”!

        • carlcasino

          Braille version in development for the Blind .

      • mbrd

        this was the first thing i thought too… bring on the collateral damage.

        • mbrd

          ahh…. now i get it, both lethal settings.

  • LazyReader
  • DaveP.

    Hey guys! Let’s take a dirt-simple and dirt-cheap idea and make it complicated and expensive!

    • Nathan Alred

      How else can Day & Zimmerman (Or Rockwell/Alliant/Krupp) make any money. Dirt cheap means no markup!

  • Bob

    Call of Duty: Advanced Warfare is becoming real…

  • Henry Reed

    All well and good until it malfunctions.

  • iksnilol

    Are they gonna be small like the V40 mini grenades? So you can carry a bunch and throw more accurately?

  • Darren Hruska

    Two fun switches?! ULTRA-BANNED!

  • Blue Centurion

    Accident waiting to happen.

  • Mystick

    Are they “the kind that shred”?

  • Tassiebush

    I am very interested in how this would function in concussion mode? Does it have some sort of removable frag sleeve? I quite like the idea of giving soldiers versatility and the very inert nature of the grenade until armed. I also can see how using electronics for the timer could actually be more reliable than timed fuses. The bi$exual controls sound good too. The main thing is probably designing the thing to be able to use it’s controls by feel. If it was me I’d just use a ruggedized egg timer and wrap the grenade with an elasticated sleeve of steel beads. That’d have to be a cheap and effective option.

    • Gary Kirk

      Ok??… So your answer is presumably to just issue concussion grenades with a sleeve of ball bearings?

      • Tassiebush

        Well yeah basically. Keep it simple. Whip it off if it’s not needed.I was kind of thinking a cord with them just coiled on around the grenade. You’d certainly know them by feel. The challenge as I see it is making an intuitive timer on it.

        • Pressure switch that senses when the sleeve is absent and shortens the delay.

          • Tassiebush

            That’s a good idea!

      • joe

        Works for the DM51….

  • Could this not be accomplished at considerably less expense– and with considerably fewer points of potential failure– by simply issuing a concussion grenade with an easily-removable notched metal sleeve around it? Like, if you want an offensive grenade, you just pull a snap ring on your defensive grenade and pop off the frag sleeve?

    The freakin’ defense contract industry, man– no sane person looks at a hand grenade and thinks, “I should figure out how to put software on that!” unless they’re trying to rip off the government.

  • Dougscamo

    Hey, I didn’t say flash-bangs (LSD’s)……Pete did! I’m innocent! Really, just ask me!. Your post didn’t appear on my alerts or I would have answered sooner.

  • LazyReader

    Or Maybe….
    you could save the money and just have two grenades. It’s a round ball
    that blows up, either with some metal in it or without. How complicated
    does this need to be. Pull pin, 5 seconds later, Grenade go boom, end of story.

  • Jim

    Electronic? If that thing depends upon a battery to detonate, forget it. Battery powered equipment has a tendency to fail when you need it the most. The KISS principal still rules in combat situations. You are not going to have time to ‘program’ it, especially in the dark. Pull pin, throw it or roll it, take cover.

  • Dan

    Let RONCO design it. “It’s so easy just set it and…..forget it!”

  • whskee

    How? I’m trying very hard to understand how there could be a frag setting alongside a non-frag setting. Where & what are the frag elements, and how are they magically turned off for concussion effects? That part isn’t readily apparent to me here.

  • Richard

    Someone has been playing too much call of duty

  • FormerEnlisted

    Rank stupidity from the civilian engineers at Picatinny: they are taking the world’s simplest and most dependable killing machine and turning it into an expensive and failure-prone nightmare. ARDEC/Picatinny is a nest of young and inexperienced folks who never wore a uniform and they do not understand the needs of combat and never will.
    1. Who asked for a “selectable effects grenade”? Certainly not someone who has used them. A grenade is a close-in murder weapon that is used when the enemy’s so close you can almost touch them. They’re used to clear buildings, tunnels, caves, bunkers and most often used at night to keep from giving your position away. In the heat of combat, do you really think you have time to ask which setting your grenade is on? At night, does it have a little light to show the selector switch?
    2. An electronic detonation train? How’s the battery life?
    3. Insensitive explosives? Really? How often has sympathetic detonation been an issue with hand grenades? All they are really doing is adding another failure node to what was war’s simplest weapon.
    We need to reform the hierarchy of our government labs and engineering and procurement agencies to put actual combat veterans in charge of development and acquisition. Combat is organized murder, not an arms show to wow the bystanders with technologies. What’s next, putting a Picatinny rail on a grenade?

    • Cottersay

      Agreed — the article almost seems like an April Fools joke…

  • wiley

    i wonder if the new electronic grenade is EMP proof?

    • mbrd

      good question!

  • Mr Saturday Night Special

    Why don’t they just make it a hand held EMP weapon❗

  • bobk90

    What a WASTE of Time & Money… An EMP or Solar Flare and these Grenades become Paper Weights!!! Also, don’t we already have the FLASH BANG Grenade! Remember that CIVILIANS (collateral damage) support their Military/Fighters by Sustaining them on the Front Line, right? Complaining about Civilians getting Hurt & Killed is nothing but Psyops…

    • Cottersay

      Ahhh, a concussion grenade isn’t even CLOSE to a flash-bang!! A concussion grenade is meant to be LETHAL in close quarters, but without endangering others nearby by with fragmentation. (Were you never in the military??)

      Further, as an RF engineer with years in the defense industry, it is a easy matter to protect small objects (such as a grenade) against even massive EMP effects.

    • What in the world are you talking about with this empand solar flare stuff??? A flash bang in not lethal and only rattles you around and makes you deaf for a time. I’ve used them enough to know. The concussion grenade kills by making your internal organs mush from over pressure nit even close to the same thing.

    • Cottersay

      Wow, @bobk90:disqus, you are one hell of a clueless punk, what with your “Yes, I am a Combat Veteran” stolen valor lies. Any REAL combat veteran knows the friggin’ difference between a flash-bang and a concussion grenade. Dimwit.

      • bobk90

        Believe what you want but most who Attack other people, falsely by the way, are the real THUGS, who never served or were never in combat and are hiding behind a False Anger! I was in the Army for 9.75 years, 8 of them a FT. Bragg, NC while 5 of them I was with D co. 2nd Bat. 7th SFG(A)! I was NOT a Tabber(SF Qualified) and worked in “B” Teams which is an A Team modified with support personnel to control up to 6 ODA’s on mission, for a B Team total, on avg, around 25 people! No Valor Stolen here friend! We did Drug Interdiction during the Drug Wars, and Fought Communists & Socialist in a few Central American Countries! We only issued Frag Grenades & Flash Bangs and never saw a Concussion Grenade in the 5 years I was with SF and the Flash Bangs worked for us! I’m not saying Concussion Grenades are crap or that they don’t have a purpose! I’m saying that with a EMP Strike, Man made or not, will make all these so called ‘Smart’ Grenades into paper weights and is a Waste of Resources to the Military and the Tax Payer!

        • Cottersay

          @bobk90:disqus And with ALL of your supposedly MASSIVE amount of experience, you didn’t have a CLUE about the differences between a stinking flash-bang and a concussion grenade??!! In fact, when I tried to explain the HUGE differences between the two, you became irate and insulting.

          All I can say is that you must be a REALLY slow learner, my friend, as I learned the differences in BOOT CAMP, for christ sake.

  • Roadrunner0

    They are also working out a selector for timed or impact detonation so either you get the x second delay or it goes bang when it hits the ground after being thrown..

  • CountryBoy

    “With these upgrades in the ET-MP, not only is the fuze timing
    completely electronic, but the detonation train is also out-of-line,”
    Hall added. “Detonation time can now be narrowed down into milliseconds,
    and until armed, the hand grenade will not be able to detonate.”

    It would be interesting to see the innards of the grenade to see how the different modes operate. Are there separate charges, or are they located in different areas, for example?

    And that last phrase about “will not be able to detonate” is interesting, but never underestimate the ability of having something that “won’t” detonate… so. Projectile impact, for example?

  • Carlos Villarroel

    Spanish Army was the first one to adopt an electronic fuse for the Expal Alhambra grenade, though it is not capable of being offensive/defensive (it has the normal feragmetation cup that screws in the body).