This was built on a CIA receiver witha Citadel barrel in .308, cut down to 17". It is in a Ramline plastic stock and has a M1 Carbine front sight. The other metal is G.I. There were four parts that were modified to make this work, op-rod, op spring, stock ferrule and the follower arm. Thanx for looking, Chuck. P.S. I am also just finishing a Ruger 10/22 into a M1 Carbine wood. Pics later.