Created from the same robust foundation as its predecessor, the SIG MPX GEN II Air Rifle has been updated with modified furniture and controls. Now featuring an M-LOK system handguard, flat blade trigger, reduced angle grip, a redesigned buttstock and a low-profile recoil pad. Chambered in .177 pellet and complete with rifled barrel and flip-up sights, the CO2 powered SIG MPX GEN II Air Rifle keeps you on target while delivering 30 rounds of semi-automatic firepower down range. To achieve peak performance with this air rifle, we recommend using SIG SAUER or equivalent premium pellets with a grain weight listed below.