Magnetomechanical Recoil Reduction System for Pistols

Greek company DPM Systems Technologies makes a very unique device called Magnetomechanical recoil reduction system. It attaches to the host pistol via the accessory rail and replaces the recoil spring assembly. The new spring except returning the moving parts to their initial position, also has a built-in recoil reduction system. And as the name implies, it is composed of not only mechanical recoil reduction means (springs) but also features a magnet assisting the process. The magnet attracts the slide and pulls it closed tighter.

According to the company, this system locks the slide with double the power and delays the initial opening of the action. They claim that it helps to prevent gasses from escaping through the breech and makes the slide motion more gentle thus reducing the felt recoil.

Other features of this system are the glass breaker tip made of tungsten carbide and an accessory rail under it. Also, the forward protruding portion should help to prevent the slide from unlocking and going out of battery when the gun is pushed against something. This device is made of 6061 T6 aluminum (black anodized). It is available in the USA (for Glock pistols) through DPM Systems USA website at MSRP of $55.

Everything sounds good, except it raises many questions. If the magnet forces the slide to close tighter, won’t it cause short stroking malfunctions with certain loads? Won’t it be much harder to rack the slide with increased lockup strength? And obviously, the disassembly is made much more complicated. Nevertheless, usage of magnets in firearms is something not very often seen. In that sense, it is interesting to see where magnets can be employed in the firearms’ design.

I think magnets can be used in the opposite manner for the recoil reduction. Imagine a magnet in the portion of the gun where the recoiling parts hit the stationary part (say the very bottom of an AR-15 buffer tube) and another magnet mounted on the moving parts (e.g. on AR-15 buffer). The magnets are situated so that they face each other with the same pole and at the very end of the rearward motion of the moving parts (right before they hit each other), magnets will repel each other and soften or even eliminate the impact of the moving parts. These are just my thoughts with no scientific backing or calculations. It would be great to hear our readers’ opinions on this subject in the comments.



Hrachya H

Being a lifelong firearms enthusiast, Hrachya always enjoys studying design, technology and history of guns and ammunition. His knowledge of Russian allows him to translate and make Russian/Soviet/Combloc small arms related information available for the English speaking audience.
Should you need to contact him, feel free to shoot him a message at TFBHrachyaH@gmail.com


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  • Bigbigpoopi

    Damn. We may have magnetic suppressors one day.

    • Gary Kirk

      Magnetic suppressors.. Hehehe.. Sounds like the name of a bad 80s metal/punk band..

      • George Smythson

        hilarious… still laughing…

      • Paul Strickland

        Yeah….I seen them dudes….they played warm up for “A.R. and Rifles”….smokin’ little band….tight group.

  • Michael Lemon

    Cool!

  • Very curious to see how it works.

  • JSmath

    I was thinking the same as you Hrachya as soon as I saw the images, but after reading the patents and looking at the images again, it’s pretty obvious what they did and how the magnets are involved:

    The recoil springs/guide rod are the same device they’ve made/sold in the past. It exists so the user can customize/fine tune the recoil behavior of the pistol, which I imagine could be useful on a racegun.

    The magnetic device is (merely) a magnet shoved into the accessory rail attachment – That’s where it does its lockup assistance, by pulling the slide forward. This conveniently built into the block physically blocking the slide from being pushed out of battery like other stand off devices, and yay, a glass breaker. I somewhat expect to see this thing in John Wick 3.

  • Paul Rain

    It’s not incredibly expensive.

  • CS

    This product has been around for years and really isn’t anything new.

    • Dan

      Never heard of it before so it’s news to me.

  • Blake

    Cool idea, as long as you’re using stout loads that will still cycle the action. $55 is very reasonable for a device like this.

  • baserock love

    I just like the idea of sticking crap to my fridge with my glock.

    • noob

      Yeah, they could have at least paired it with a gun agnostic holster solution like the Blackhawk Omnivore or the Armordillo Concealment X-FER holsters. That would be more useful than a glass breaker

  • Rick O’Shay

    Is recoil really that much of a problem for Glock owners?

    • SpartacusKhan

      yeah, but it’s still not even in the top 50

    • Wow!

      Glocks are easily the softest shooters around next to heavy match guns.

  • So, when can we just buy rail guns?

    • roguetechie

      7 days after never since they’ve been a few years away since a decade plus before the Manhattan project began!

  • Rnasser Rnasser

    The definiton of “the answer to the question nobody asked”…

    • VieteranGunsmith

      Apparently someone did ask the question because this thing exists. Whether it is a real problem or not is a subject for debate, which is what is going on here.

  • Sunshine_Shooter

    So… It makes standard recoil springs into extra power springs, making ammo less reliable in opening the action, but you don’t get the benefit f a stronger spring in closing the action in dirtier conditions, and makes slide manipulations harder.

    HARD pass.

  • therealgreenplease

    This got me thinking: why not have a “slide” ahead of the trigger and under the barrel that moves away from the shooter like the balanced recoil system in the AK-12?

    • Out of the Blue

      You mean AEK-971? Or is it on the AK-12 as well?

      • Reality

        Yes its not in the AK12, hes just talking. Its in the AEK’s and A545.

      • therealgreenplease

        I believe both rifles have a BAR mechanism

  • Wang Chung Tonight
    • VieteranGunsmith

      Unless it is the only option between being shot and possibly not. This concept of shoving the weapon out of battery will work but you better have a next few moves planned to either disarm the opponent or deflect the weapon until you can do something like shoot him with your pistol or cutting with a knife. That is what training is for, and if you look carefully at this photo you can see the person with the gun has both hands busy, while the other person has some options.
      I think their point in showing this is when a pistol is equipped with their device, the point of the glass breaker not only protrudes to a degree that makes this tactic extremely difficult, but with the added pain of the pressure of the palm on that glass breaker it would make it highly unlikely that the opponent could force the weapon out of battery in the first place.
      Oh, and I am certain no one would do this with a round in the chamber. If you look carefully you can see there is no change in the extractor position that would be apparent if there was live ammo in the chamber.
      Don’t panic, it is merely a picture for illustrative purposes only.

      • Seth Hill

        That depends on the gun, some guns will still fire with the slide slightly out of battery (like when pressed against a hand/body). IIRC the Springfield XD is one of those.

  • Green Hell

    Reminded me of magnetic suspention Audi installs on their RS models, supposedly you can change the stiffness from Race to Comfort mode on the go.

    • RocketScientist

      Magnetorheological shocks. Developed by GM (Delphi) decades back. They’ve used them as an option on vettes and a few other luxury cars for decades, also been licensing the tech to many euro manufacturers (Porsche, Daimler Benz, BMW, Audi, etc). They are somewhat conventional fluid-damped shocks, except the fluid is a special fluid that contains a suspension of micro-size magnetic particles. Application of varying magnetic fields changes the viscosity of the fluid, effectively changing the damping coefficient of the whole system. These changes can be made on the fly, thousands of times a second.

  • Paul Joly

    “magnets will repel each other and soften or even eliminate the impact of the moving parts.”

    Thats a magnetic spring, it acts like a coil compression spring.

  • PAltares

    I’ve thought of magnets being used as you said too; pole to pole to reduce felt recoil. I wonder if it has been attempted and found not to work or to be cost effective, or just hasn’t been given a strong attempt. I think that besides rehashing the same ideas with minor, mostly aesthetic differences, there are still some opportunities for thinking outside the box as far as firearms design and application. If only I had the brains, and time, and funds to pursue them…

  • Reality

    Hrachya, your last tought doesnt work well, springs are much stronger for much less weight.

  • Alastair Baldwin

    I use DPM recoil reducing system on my CZ75 Tactical Sport I use for IPSC. Not only does it work great, they are a great company too.

    They really helped me out when I bought it, and helped me out via Skype with a problem I had with it.

    Can’t recommend DPM enough.

    • GaryOlson

      I installed a DPM in a Beretta 96 Brig. After some spring modifications and action polishing, I had some frame battering. The dual additive spring on the DPM stopped the frame battering; and also helped strip the next round from the mag more aggressively.

      I recommend them for certain uses. More force is required to pull the slide back to lock position.

  • mig1nc

    I’ve never seen a buffer tube get over 100^C though. But I agree, there are few areas where you could expect a magnet to survive in the functional areas of a rifle.

  • Tp

    I am with you on uses two strong Neo’s repelling each other, I wanted to try the idea quite along time ago, but I could not figure out how to actually do it, no fancy equipment in my workshop.
    Now their idea using it as a closing assist, nah, the magnets will go to hell from getting hit all the time. and like you said, harder to rack, and may cause improper ejection

    • VieteranGunsmith

      The trick is to not allow the magnets to actually collide and maintain an air space between them.

  • Fjgiie Gray

    “It is available in the USA (for Glock pistols) through DPM Systems USA website at MSRP of $55.”
    If this is true then this is a very good idea and a very wonderful marketing tool.

  • VieteranGunsmith

    I like the idea the author had about the recoil buffer in an AR platform using same poles in opposition to each other, and it might be a good way to mitigate the recoil impulse of the AR in 7.62 NATO caliber and other more powerful rounds. The idea has merit, but the R&D to create a marketable product that replaces the conventional buffer is going to make such a device more expensive than what is now available. Rare earth magnets would be powerful enough to delay or soften the recoil impulse in a small enough package to fit within the confines of the buffer assembly and the buffer tube. If the buffer assembly had such a magnet in it, and the stock spacer were replaced or fitted with another of equal rate arranged where like poles were in opposition to each other, along with a recoil spring rated for the correct compression I can see where this could work.
    One weapon type that would benefit more than any others would be a shotgun. The action that would lend itself to this kind of arrangement would be the conventional semi auto that has a recoil spring assembly housed within the buttstock. Whether a gas operating system or a recoil operating system was involved, such a magnetic device would tame the recoil (if properly engineered) to a degree where any shooter of any stature could use a shotgun more effectively and without the shooter bracing and flinching in anticipation of the recoil.
    I can also see a use for this in machine guns where the repeated recoil impulses are a real problem with downrange accuracy. If several of these magnetic buffer systems could be fitted in a slightly larger receiver in an axial and radial arrangement, (meaning along the bore axis and arranged like 10/2/4/7 o’clock within the receiver of a rectangular box receiver as used by most current machine gun designs), I believe this could make the machine gun much easier to keep at point of aim. Of course, all of the weapons that could employ such a device would be a bit more complicated regarding field stripping for cleaning and maintenance, and the arrangement and number of such buffers would be platform specific. I do think that this could be done for military use and would have an effect in stabilizing weapons similar to the gyroscopic steady cam platforms have done for cameras. If you can direct your fire at an aiming point and not have it wandering all over the place, the resulting increase in accuracy will make such equipped weapons more effective.
    I would like to see more research done in this area of arms design. We’ve developed the semiauto and automatic firearms actions to the point that only minor changes can be made to make them stronger and require less maintenance, (in regard to having to replace parts that wear during the life cycle of the platform), and perhaps it is time to devote some attention to refining supporting mechanical systems in such a way that would not only prolong the life of the weapon but make firing more operator friendly as well as increase the hit capability when multiple rounds are fired at the same target.
    While this would add some weight to most weapons that this could be designed into, I think the multiplied effectiveness and reduced impact on the shooter would be a worthy consideration.
    All of that being said, other than to decrease the part failure rate in the auto pistol platform, I don’t view this as a particular advantage in a handgun. I think there are more effective methods of mechanically compensating for recoil that add less weight and require less effort when chambering the first round.

  • Mark Lee

    The principle is sound but not in this simple application by virtue of the minimal strength of the magnets used. The only way this would be effective in delaying the action from coming out of battery AND providing blowback buffering would be to have (1) a much stronger magnetic force that was (2) electronically powered, (3) controlled by a timed switched at the precise moment AND (4) calibrated for the powder load, weight of the projectile and barrel length.

    For the buffering, using the same factors listed above is required, albeit in reversed timing. In any case, the only available technology capable of accomplishing this is electromagnetic energy induced through powered coils – which isn’t going to happen in a pistol anytime soon because of the weight and attached power wiring required. Rifles, maybe, but the weight would be very restrictive and it would be better just to build a portable railgun if that much engineering and hardware has to be invested.

    This cheap gimmick will provide minimal advantage and like it was said earlier, this is an answer to a question that no one ever asked. Happy Pi day people!

    • VieteranGunsmith

      Using rare earth permanent magnets is a way of overcoming the whole electromagnet problem in both weight and supporting structure requirements. There are a lot of physics challenges in this concept, but it appears that this company has overcome some of them with a limited size restriction. Neodymium magnets are quite strong, in fact a pair of 3/4 inch diameter 1/8 inch thickness discs are very difficult to separate once the north & south poles are proximal to one another.
      The fact they have made this work well enough to sell it as a product says something for their efforts. As a first responder/police officer I can see the utility in having the glass breaker on the sidearm. In an emergency situation this would be an asset – provided the user had sufficient training to employ it properly. Keeping the index finger along the frame or wrapped around the grip under the trigger guard would of course be a mandatory safety practice recommendation. The glass breaker could also be used as a deterrent or an impact weapon in close quarters and you’d have the option of deadly force if necessary.

  • Seth Hill

    Wouldn’t the magnet cause the slide to slam back into position harder than it would have without it, causing the muzzle to dip?

  • Paul Strickland

    Hmm?….wait….what?…. Will the number of things that people will hang on their handguns ever end? I think I’ll leave my springs on the inside so I’ll have room for my flash light / laser / stun gun / cigarette lighter / video camera and mp3 player.

  • mazkact

    Witchcraft…………………….maybe snakeoil. I’m not smart enough to be fooled by this 😉

  • DaveGinOly

    Concerning other uses of magnets in firearms: Slamming magnets around in a firearm can demagnetize them, so they won’t work in many applications.

  • Eric B.

    Now to incorporate that INSIDE a pistol.