Draw back to short stroke kits?

TurboTrout

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Any draw back to short stroke kits on AKs?

Any reason they arnt factory?

Damage to the gun? Lack of accuracy? Something else?



Rifle-Dynamics-KP9-Short-Stroke-Buffer-for-9mm-AKs.jpg


 

papershredder

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Newer product with very little marketing I assume. There used to be a company that made plastic recoil buffers for semi-auto rifles. Apples to oranges here, but I put one of those old style recoil buffers in an sks many moons ago, ended bending the rat tail on the bolt carrier after shooting through a couple cases of ammo. This system here looks like a much improved design of that concept. From what I can tell on the website, the spring guide rod looks like it has been shortened to accommodate the buffer. If it is a new product, then time will tell if it's just a rehash of an old idea or an actual improvement upon it.
 

hlee

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    On their site, Rifle dynamics notes a sharper recoil impulse. Makes sense as the bolt is stopping 1.5” shorter than it otherwise would, with more retained speed before it slams into the buffer.

    But, in the AK world, you’ve got ALOT of “Nyet, rifle is fine” types that think the original design is perfection.
     
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    TurboTrout

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    Wonder if this would result in more wear on the frame and reciprocating components by limiting the travel on the recoil spring?
     

    papershredder

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    If rifle dynamics uses a stiffer return spring, it might mitigate the extra force on the trunnion. If there are any problems with the buffering system ,it might take a couple thousand rounds to show. If the AK can last 5000+ rnds before rivets start wearing, then I'd say the buffer system is gtg. From what I've read and seen on LocalAK operator's youtube channel, 5,000rnds seems to be the breaking point in lesser quality AK builds. I'd say sit back and wait for long term reviews on this system and watch for reports of feeding issues before buying.
     
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    TurboTrout

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    If rifle dynamics uses a stiffer return spring, it might mitigate the extra force on the trunnion. If there are any problems with the buffering system ,it might take a couple thousand rounds to show. If the AK can last 5000+ rnds before rivets start wearing, then I'd say the buffer system is gtg. From what I've read and seen on LocalAK operator's youtube channel, 5,000rnds seems to be the breaking point in lesser quality AK builds. I'd say sit back and wait for long term reviews on this system and watch for reports of feeding issues before buying.

    They claim full auto KP9 have run them for years

    5k to shit rivets is not good
     

    papershredder

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    They claim full auto KP9 have run them for years

    5k to shit rivets is not good
    Yeah, I was thinking 7.62x39 here, my bad. If people are getting long life out of the short stroke system for 9mm, then I'd say Hlee's post above hinted to the answer as to why they aren't factory, "Nyet, rifle is fine". Pistol caliber AK's are kind of a niche market. There will have to be some real demand for Kalishnikov USA, Arsenal, PSA, etc.. to make the necessary design and tooling changes. And that's assuming Rifle Dynamics isn't holding onto any patents of the upgrade.
     

    TurboTrout

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    Yeah, I was thinking 7.62x39 here, my bad. If people are getting long life out of the short stroke system for 9mm, then I'd say Hlee's post above hinted to the answer as to why they aren't factory, "Nyet, rifle is fine". Pistol caliber AK's are kind of a niche market. There will have to be some real demand for Kalishnikov USA, Arsenal, PSA, etc.. to make the necessary design and tooling changes. And that's assuming Rifle Dynamics isn't holding onto any patents of the upgrade.

    So probably no factor with 9x19?