Springfield ATC

The rifles use a direct impingement mid-length gas system and M16 bolt carrier groups along with a GI-style charging handle and a carbine “H” heavy tungsten buffer. The receiver extension is mil-spec and has a QD receiver endplate. The upper is made of 7075 T6 aluminum and has M4 feed ramps while the handguard has M-LOK accessory slots. The guns ship with 20-round Magpul PMAGs.