View on LOZ Suggested Retail: $221.99. YOU MUST BE AT LEAST 18 YEARS OF AGE TO BID ON THIS LOT. Sig Sauer MCX .177 Cal Co2 Powered (30 Rounds) Air Rifle, Black, 18 inches. From tactical drills to target practice, the CO2 powered SIG MCX Air Rifle delivers 30 rounds of rapid-firing, simulated SIG MCX performance and handling for more realistic, economical training and practice — any time, any place. Chambered in .177 pellet, features include an 18'' rifled steel barrel, synthetic handguard, picatinny rail, tactical front grip, flip-up front and rear sights and more.. 7 CALENDAR DAY FULL REFUND GUARANTEE ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE IS ALSO AVAILABLE. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.