Originally Posted by SSTX39
My piston has to be pushed in & does not slide freely. Have not fired it yet. I think I wanna replace the complete gas system. I noticed it after I installed my ATI stock.
you might want to test fire the gun before deciding it needs a new gas system.
it may be that the tube needs a good cleaning.
if you do decide to get a new tube and piston then check out Tapco they have a good system and the piston is stainless.