sacsucks 3 Posted September 21, 2009 Report Share Posted September 21, 2009 I only put about 20 rounds through my saiga 12 last weekend and noticed when cleaning that I had a good nick on the side of the piston. The only thing I did differently this time at the range was use a couple of rounds of 3 in magnum slugs. But I really only fired about 2 or 3 of them as they are too much for me in a 30 yd indoor range. Could the mag slugs have caused the piston to get damaged this way? I could not find any unusual debris or dents on the inside of the gas system. Is there any need to smooth it down now? Do I have an over gassed gun after my conversion? Appreciate comments and ideas. Quote Link to post Share on other sites
sacsucks 3 Posted September 21, 2009 Author Report Share Posted September 21, 2009 Sorry for the double post. I used the back button on a post edit and it did this. Please reply on the other one. Quote Link to post Share on other sites
BobAsh 582 Posted September 21, 2009 Report Share Posted September 21, 2009 Are you sure it wasn't nicked before? Quote Link to post Share on other sites
sacsucks 3 Posted September 21, 2009 Author Report Share Posted September 21, 2009 Are you sure it wasn't nicked before? I never noticed it before. Not likely it was there before the shoot. Quote Link to post Share on other sites
BobAsh 582 Posted September 21, 2009 Report Share Posted September 21, 2009 OK, but that's not the "piston". That is a "bolt extension". The part in the pic has no bearing on gas sealing so any scratch won't affect cycling. Quote Link to post Share on other sites
vitamink 90 Posted September 21, 2009 Report Share Posted September 21, 2009 when you re assemble your 12 after cleaning, have you ever tried to insert the bolt carrier group into the gun without setting it on the rails correctly then tried to force it in at an angle? sorry for the run on sentence. That could be the issue. I know i've tried to insert it without fully seating the carrier correctly just to have it enter at a downward angle. just spitballin' Quote Link to post Share on other sites
G O B 3,516 Posted September 22, 2009 Report Share Posted September 22, 2009 When you fired the 3" magnum shells , were you on the #1 gas setting, or still on #2? The "nick" is where the bolt carrier extension impacts the front trunnion when the action cycles. This does not hurt anything. In AK's of any type the bolt carrier does not fly back in a nice parallel plane , the front of the gas piston (concave nosed equivalent of the flat faced bolt extension of the shotguns)rises up due to the offset between it and the center mass of the bolt/carrier group, and huge clearances in the guide rails. This is one of the secrets of how this weapon can cycle when it is filthy! It shakes the crap off of itself! Quote Link to post Share on other sites
sacsucks 3 Posted September 22, 2009 Author Report Share Posted September 22, 2009 Thanks all for the comments. Bob- thanks for the correction in terms. It looks like a piston Vita- I didnt jam that bad boy in there. Learned a long while back the proper method to rotating the bolt etc. GOB- I only shoot slugs and buck at the range so leave it on #1. Its a weird one guys, but maybe a fluke. Ill keep you posted it it happens again and do a further investigation of my gas system. As long as no one thinks its an over gassed issue, then I think Im not worried. Quote Link to post Share on other sites
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