I am always in search of good precision products for my sks that will improve accuracy. I do have all the original parts and can change it back but I have another to be the stock one. This is the most fun and cost effective rifle I own to modify. I was just wondering what parts really helped you to shrink your groups? So far I have found some that worked for me. fiber glass bedded Tapco T-6, Ricks Muzzle Break, Kivaari trigger job, a scope, buffertech recoil buffer, and the one that continues to baffle me is my Albanian bolt carrier (I think it is because it just fits better).