As I stated earlier I have just recently purchased an upper, but I'm still waiting for the Full-Auto Bolt Carrier !! I do own a Legal M16A1. Mark Kinsler (SOG Armory) is supposed to be getting me the carrier.
I can't wait to try this one in Group Therapy Mode !!
Do you recommend any change to the recoil spring, as in a stronger or weaker spring??
Later
Martin