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Found 8 results

  1. Daedalus82

    Gas Piston Length from carrier?

    Hey guys so I recently acquired and installed a kns adjustable gas piston for my saiga .308. I installed it but since Saiga .308 pistons have no shelf on them, I didn't get the correct length to stick out. Now, my rifle won't cycle at any setting of the kns piston. Can one of you tell me (as accurately as possible) tell me the length your piston sticks out from the bolt carrier? or maybe school me on the correct procedure for setting piston length if there is one? Any help would be greatly appreciated.
  2. viper-dagger

    DSC00467

    From the album: AR15

  3. viper-dagger

    DSC00474

    From the album: Saiga

  4. viper-dagger

    DSC00459

    From the album: Saiga

  5. steveUK

    Gas regulator nut comes loose

    Hi. Very new to the MKA, in fact its my first ever firearm. I have noticed that the gas regulator nut works loose after about 30 rounds through the gun. I have tried tightening it down hard but don't want to over tighten and strip the threads. Once it works loose the gun FTE quite often. Anyone else had this issue and fixed the problem or any suggestions.
  6. So, a recent discussion on M1 Garand-specific ammo got me thinking about gas operating systems in firearms. The reason I had been told that Garands either needed specific ammo or an adjustable gas plug to avoid damaging their op rods was because modern ammo used powders optimized for heavier bullets in longer barrels, i.e. a slower burn rate. This, it was said, maintained higher barrel pressures for a longer time, putting more stress on the Garand's gas system than it was designed for. And that made sense to me. I don't know much about internal ballistics, but spreading the pressure out seemed like a reasonable way to launch heavier projectiles without greatly increasing chamber pressure. That would also mean that the gas piston could be under more pressure for longer than it would be when using M2 ball. Garands, after all, use a long-stroke gas system. Other rifles, like the AK, would be less sensitive to this since they use short-stroke gas systems. Or do they? Several sources of varying authoritativeness seem to think AKs use a long-stroke system because the piston is attached to the bolt carrier and reciprocates the entire length of the carrier's travel. My understanding, however, is that the length of stroke is related to the length of travel that the piston makes while under the pressure of the expanding propellant gasses. It was somehow related to the diameter of the piston. For example, if the piston traveled under pressure for a distance of more than the piston diameter, then it was long-stroke, much like an engine with a stroke ratio greater than 1 is considered "long-stroke". Oddly, the most authoritative source I found on the subject, an article from American Rfileman is the only one that confirmed my preconception, but it fails to elaborate on the differences between the two designs. So, I guess that's what I'm asking you guys. Is a long-stroke gas system any gas system where the piston is stuck to the bolt carrier?
  7. Joeddox

    Gas Puck? How to install?

    How are these being installed. ??? Since they are only about $8 I was wondering do you just drop them infront of the gas piston and thats it? I'm surprise that counts as a part if your not removing any russian part. If that is all there is to it... Maybe I'm wrong? I didn't see this in any pervious post that I searched...
  8. Is hitting the rear block the only distructive sign of over-gasing? 00 buck fails to eject on settings 1 and I'm wondering if I could get away with running it on 2. Any other signs to look for?
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