Glad you got one, I love my S&W AR15 optic model. When I bought it I called S&W and ask them about lacquered coated ammo if it was all right to shoot in the S&W and would it void any warranty. They said, "shoot it, it won't void the warranty nor hurt the S&W AR15." So I bought 2000 rounds of Brown bear and have put 500 through it and not problems and it shoots the lacquered coated 52gr HP Brown Bear ammo pretty good for Russian ammo.