Relatively new Rem. TAC-14 (sold by Remington in current arm brace configuration) Has had 2 boxes of birdshot and 5 shells of 00buck through it so far. Upgrades: Surefire forend w/ batteries Trijicon tritium front bead J&J round Extended safety +1 mag extension Wilson spring and follower Milled exact edge extractor & upgraded spring Remington police carrier spring upgrade