DPMS

The Bull 20 has a button rifled, 416 stainless steel bull barrel with 6 grooves and a 1:9" RH twist, gas operated rotating bolt, and a 8620 steel bolt carrier. The upper receiver features A3 flattop, dust cover, and shell deflector. The upper and lower receiver are made of 7075-T6 aircraft aluminum. The lower receiver features a semi-auto trigger group, aluminum trigger guard and aluminum magazine release button. The Bull 20 has a standard A2-style black Zytel stock with trap door assembly and ribbed aluminum handguards with a free float tube.