weasel_airlift

Greetings all, I've been looking into tweaking the gas system on my Saiga 20. http://store.carolinashooterssupply.com/servlet/-strse-190/MD-ARMS-SAIGA-12/Detail Will that thing work, or do I need to dig one up that is specifically for a Saiga 20? Also, while on the subject are those Twisterpuc gas pistons worth putting in? Thanks for the input