Standard Products M1 carbine with 8-43 dated Underwood barrel. Parts codes are operating slide Underwood, trigger housing Standard Products, hammer Underwood, bolt Inland, rear site H in shield, front site unmarked, bayo lug KI, mag catch M, safety N, recoil plate unmarked, stock stamped AAM on left side, handguard unmarked. I have not taken the bolt apart but I would assume the extractor and firing pin are the same as the bolt. No import marks, I do not have a gauge anymore but the rifle is every bit as accurate as a Saginaw I had that gauged well under 1. I have fired GI, Tulammo, and old Erma ammo through it without a single problem. Comes with a 15 round mag if legal in your state. 850 shipped, first I'll take it gets it. FFL required if outside Ohio. Feel free to ask questions. Thanks for looking.