The Stag-15 Model 1 is made to mil-spec standards with a removable carry handle and an M4 government profile. The Model 1 has a 16" chrome-lined barrel with a 1 in 9" twist that's manganese phosphate coated and button-rifled. The upper receiver is forged from mil-spec 7075 T6 aluminum and hardcoat anodized and has a picatinny rail on top. The front sight is an F-marked A2 post and the rear sight is integrated into the carry handle. Additional features include: thermoplastic handguards with double heat shields, an enhanced bolt carrier with a manganese phosphate coating, a single stage trigger, an A2 flash hider, and an A2 plastic grip. The Plus Package upgrade gives the Model 1 M4 feed ramps, 1 in 7" twist rifling, an MP/HP tested and marked bolt and barrel, an M-16 bolt carrier, a heavy buffer assembly, and one additional USGI mag.