Strike Industries Teases MP5 Upper Receiver

Strike Industries used their Facebook page to announce a potential New Year’s treat. Apparently they are developing a drop-in aluminum H&K MP5 receiver that will work with standard trigger housings. The new gun will also use standard H&K barrels, charging handles and magazines. No word on if the signature MP5 delayed roller lock action will find its way into the Strike variant, but we still have a few weeks before the 2017 SHOT Show.

Dubbed the SI 2017, the pistol or rifle has a full length top rail and modular attachment points on the forearm. It also appears to be ambidextrous, with the option to switch the charging handle to the right side. The rifle prototype sports a Sig Sauer MPX/MCX folding stock, with a rail attachment point for other stock options.

Strike CEO Garrett Keller graciously responded to an email request for additional information. He writes:

First and foremost we are keeping the system true to the standard MP5 being one of the most widely used platforms for LEO/MIL worldwide. We don’t want them to have to retrain to new operating procedures so still no bolt lock back. Compatible with the already widely available MP5 Lower Receiver, Bolt and trigger pack, what we are aiming to provide is an updated modular upper with, barrel, handguard, and stock configurations for pistol, sbr and rifle options “user choice”.  It will feature continuous top rail, MLOK rail system, integrated flip up front and rear sights on all length options except the shortest length due to structural limits and feature an ambi charging handle. More updates coming soon!

Keller also shared some design drawings:

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After seeing the mock ups and getting a few details from Keller, I have to say I’m pretty excited. The rest of the details are under wraps at this time. Interested? Keep an eye on the Strike Industries Facebook page (and TFB) for more information.

IMG_5308 IMG_5309

Aluminum upper receiver+Original MP5 lower.+Original MP5 barrel = new SI 2017 pistol/ rifle. Come by our booth 20114 at SHOT SHOW 2017 to check out this new project!

Strike



Pete

LE – Science – OSINT.
On a mission to make all of my guns as quiet as possible.
Pete.M@staff.thefirearmblog.com
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  • DW

    IIRC registered part is the upper, still, does that mean this is a cheaper way to get into roller masterrace?
    Also maybe it is just my opinion but they should have done a 556/300 upper, HK 33/53 are underappreciated

    • Intellectual Slacker

      I second this. A g41 would be excellent

  • Concerned Mother

    Will it be anywhere near competitively priced with the MPX and EVO? I guess we’ll find out.

  • Scott Wagner

    Yes Please!

  • I wish there were a similar, bufferless PCC/PDW that took glock mags.

    • KestrelBike

      Yeah, wondering if they could have done this with Glock mags instead. 1 hk mag =$80.

      They say they’re trying to keep in line with what PDs use, but I don’t see why those PDs would spend the same price for this thing (no way strike is getting this + barrel and parts AND gunsmithing to assemble, for under $1,500 each) for an original HK MP5 just for rails and an ambi charging handle. Oh and don’t forget to bring your own lower receiver + trigger pack. And probably stock.

      Don’t forget, the upper receiver is the serialized, “firearm” part of it. Fitting a barrel to an mp5 receiver is not plug-n-play, either.

      This is a neat idea for sure, but I don’t see the problem they’re trying to fix. A new lower receiver with ambi parts, a thumb-reachable selector, and index finger reachable mag drop, now that’d have been something.

    • Mmmtacos

      Doesn’t seem an upper for the MP5 could be made to take Glock mags due to the geometry of them. It’d be cool as hell, but it would probably have to redesign so much of gun itself it would hardly be an MP5 anymore.

  • some other joe

    Will it take HK fixed stocks? And is there a 5.56 version in the works if this takes off?

  • Joe

    Standard blowback or delayed roller?

    • Pete – TFB Writer

      That’s the $1M question right now…

      • Alexandru Ianu

        If it’s still roller locked, they could scale it up to the HK33.

        • some other joe

          It’s roller delayed, not roller locked.

      • Michael R. Zupcak

        Gotta be roller-lock if it accommodates factory H&K barrels, right? Don’t the rollers lock into the barrel extension depicted in the drawings above?

        Also, if it’s just mass-delayed blowback, where’s the mass?

        • Pete – TFB Writer

          Correct. I just didn’t want to make too many assumptions.

        • SGT Fish

          no it doesn’t have to. you can run one without rollers and it will work like a blowback but with a too light bolt. blow back guns require heavy bolts and stiff springs. if its blowback, which I scarily assume, it wont be worth it one bit

        • Giolli Joker

          There could be mass above the barrel, telescopic bolt.
          But I hope you are correct and it is roller delayed.

  • mig1nc

    So, it has a Sig stock rail on the back? That’s pretty cool.

  • Something something make it in .45 acp, and then SHUT UP AND TAKE MY MONEY!

    • Reef Blastbody

      10MM!

  • jay

    Why is that handguard so fat?

  • Wargle

    I’d be quite surprised if this thing still retained the roller-lock action in an aluminum receiver. Wouldn’t that chew the hell out of the receiver locking grooves using a steel HK-spec bolt?

    I don’t know where they’d find extra mass to make it blowback however; maybe they’ll give it premium pricing to reveal that the BCG has tungsten to weigh it down some?

    • Paladin

      Much like the AR15, the bolt on an MP5 locks into a barrel extension instead of the receiver.

  • KestrelBike

    They say they’re trying to keep in line with what PDs use, but I don’t see why those PDs would spend the same price for this thing (no way strike is getting this + barrel and parts AND gunsmithing to assemble, for under $1,500 each) for an original HK MP5 just for rails and an ambi charging handle. Oh and don’t forget to bring your own lower receiver + trigger pack. And probably stock. IIRC, PDs only pay ~$1-1,200 for a brand new MP5 from H&K. Civilian Individuals who roll their own upper-receiver blank or pay $1,000 for one pre-rolled will spend at least another $1k in parts to build that MP5, and that’s before labor to get the barrel pressed in.

    If PDs already have the MP5s, they’re not going to mess around getting an armorer (few gunsmiths/armorers are equipped/willing to press-in/out mp5 barrels) to switch upper receivers on 9mm carbines, when for the same price or much less they can just equip with 5.56 AR-15s.

    Don’t forget, the upper receiver is the serialized, “firearm” part of it. Fitting a barrel to an mp5 receiver is not plug-n-play, either.

    This is a neat idea, but I don’t see the problem they’re trying to fix. A new lower receiver with ambi parts, a thumb-reachable selector, and index finger reachable mag drop, now that’d have been something. That is “drop-in”. That’s also not selling firearms, which by selling mp5 upper receivers, they’d be starting to do.

    • iksnilol

      Also, it’d be kinda worth it if they made the barrels screw in instead of press in.

    • LE in IL

      BTW new HK MP5’s are almost $3k for PDs now, not $1k. F/A Scorpion EVOs are about $1400

      • KestrelBike

        Huh. Back in the day (mid-2000’s?) Class III’s were sellin’ them (new) to PDs for $1k.

  • Jirka Kýhos

    It could be problem in touch aluminum frame with steel rollers. G3 with aluminum frame had problems with durability.

  • Warpig

    It is a good start! Long over due to have others update the “HK” platform.

  • lowell houser

    I’ve got an idea, instead of making yet another useless semi-automatic submachine-gun, hows about you make some sort of bumpfire stock for one so that you can get back some of the lost functionality that would justify a pistol caliber carbine? Just sayin, the MP5 clones, the Scorpion EVO, the Sig MPX, the current Thompson – they’re all otherwise useless range toys. The weight of a long gun with the stopping power of a handgun. Up the cyclic rate and THEN you have something. Otherwise 5.56.

  • Salty

    is it in 10mm yet?

  • Aono

    “We don’t want them to have to retrain to new operating procedures so still no bolt lock back.”

    I wonder how loud the sturm and drang will have to get until someone gives us the FBI 10mm model WITH last round bolt hold open. So much competition already in the 9mm space where there are already so many great choices at every price point from Evo to MPX to B&T. Who is going to give us the ultimate pistol caliber carbine in best millimeter? COME ON YOU’RE THIS CLOSE

    Also, a STANAG 33/53… I mean… stfu and have my bank account

  • Andrew

    For me, half of the appeal of the MP5 is the aesthetics. If you just wanted a 9mm PDW style firearm, the CZ Scorpion would be the obvious choice.