Engineered for high-volume shooting and extra durability our Tac Pro includes enhanced features: all-metal construction; quick 2-pin take down; rear-mounted buffer spring for reliable cycling at high temperatures; unique hybrid gas/inertial action for reliable cycling with a wide range of loads and under heavy use. Adjustable flip up front and rear sights; quad Picatinny rail; adjustable comb; sling attachment points. Ships in hard case with 2- and 5- shell magazines. Barrel is threaded for Beretta Mobile Chokes and ships with IC tube installed (Additional tubes available on this site and from after-market manufacturers)Note: in accordance with ATF import restrictions butt stock is fixed-position. Magazines guaranteed compatible with Rock Island Armory VR80 VR60 VRBP-100 Panzer Arms AR-12 AR-12 PRO and BP-12 MKA 1919 BR-99 and FR-98/99 Shotguns.Specifications: 12 ga 3" and shorter shells 18.5" barrel with shrould; Mobile Choke One 2-shell and One 5-shell magazine Gun Weight: 8 lbs. 5 oz. Length of Pull: 14 Overall Length: 40.25