Barrel band is 100% type 2,,it has not been cut or had the bayo lug removed,,it never had one, The rear sight has me the most stumped,, the only marking on it is a PI stamped on the right side but if its been changed whomever did the work was great because it only has 1 stake mark and the lines match to a T, Its a good little gun,,I shot it today and it run like a dream, the guy I was with had a muzzle gauge and its a hair under a 1, I think I will hunt up a proper slide just to make me feel better and keep it at that,,maybe sometime in the future I may try to find correct stock , handguard and recoil plate, ,,I did go back and you are correct,,the hammer is marked LTR so the entire trigger group is correct,,,thanks