FN M4A1 Air Rifle 177 Cal BB CO2 Powered Semi

auto177.177 Air Rifles For Sale Check out our wide range of air rifles we have for sale at The Airgun Centre. All of the airguns featured on this page fire .177 pellets and come with our free lifetimeAbout this item . ADVANCED PERFORMANCE: The S Sauer P320 CO2 Semi-Auto .177 Caliber Air Pistol replicates the modular, striker-shooting desn of its real counterpart.