AK again

Thank you folks, very good to know! The Gunfixr plug sounds pretty cool. The idea of being able to better "dial in" the gas system makes good sense. I'd thought about some sort of steel bushing between the plug and piston, or just having the piston lengthened a little by the guy who builds my other AKs. This'll be my second "sporting" kalashnikov, the other being my Vepr .308. I'm a fan of "dual purpose" firearms, so to speak. If the S12 is anything like the Vepr, it will be a much-valued possession.

Hi all, I just picked up a used RAA Saiga from a local guns store. Since I've had it home, I notice that the gas puck slides forward and aft with a "clunk" noise when the muzzle is raised and a "clunk" noise when the muzzle is lowered regardless of the shotgun's state of assembly or bolt/piston position (in or out of battery). It doesn't seem to affect the function of the shotgun at all. My question is, is the clunk-clunk noise common to S12s? I'd like to use this as a turkey/deer gun when the situation calls for it and that extra noise won't be helpful for sneaking up on critters. If it