The SIG MPX redefined modern pistol caliber SBRs, and this Air Rifle version does no less for CO2 rifles. Matched to original model weight, balance and controls, the SIG MPX Air Rifle puts more accurate performance into more accessible practice. Chambered in .177 pellet, features include 8 rifled steel barrel, synthetic handguard, picatinny rail, tactical front grip, flip-up front and rear sights.