BUSHMASTER CARBON-15 C22 COMBO
.22 LR and 5.56 NATO cals., blowback operation (.22 LR cal.) and GIO (5.56 NATO cal.), two barrels chambered, flat-top receiver with Picatinny rail, 16 in. M4 style barrels with A2 flash hiders, fixed front sight base, MFT polymer quad rail...