View on LOZ Suggested Retail: $299.99. MUST BE 18 YEARS OR OLDER TO PURCHASE.. Crosman CFAST1X Full Auto ST-1 CO2-Powered BB Air Rifle And Red Dot Scope. Air power takes a future-tech turn with the Crosman ST-1, a full-auto BB airgun that does dual duty as a rifle and a pistol. The sleek, cutting-edge ST-1 integrates a high-capacity magazine - holding over 300 BBs. Lock in the adjustable stock and barrel extender and you’ve got a red dot sight air rifle, take them off and you’ve got a full-auto air pistol ready for the range.. 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.