The Truglo Head Banger Long Range Turkey choke tube multi-phase groove technology engages the shot cup and guides the pellets into a tight and consistent pattern, shot after shot. Rated for HEVISHOT, Winchester, Long Beard XR, Federal Premium 3rd Degree and other high-performance turkey loads. Heat-treated steel for increased strength and durability with powerful turkey loads. CNCmachined for optimum precision and a polished end face for better seating and sealing, providing maximum power without pressure loss.Compatible gun models are Mossberg 3.5 AccuChoke 835 Ulti-Mag and 935 Magnum.