Lead & Steel M-16A1 Style Suppressor Flash Hider 1/2 x 28 mm Parkerized Three-Prong Retro Black. 95 oz Features of Lead & Steel L&S M16A1 Style Flash Suppressor - 1/2X28 Parkerized Three Prong Threads- 1/2-28 Bore- Up to 30 cal Weight- 1.95oz Heat Treated for strength and durability Phosphate Coated for corrosion resistance Milled flats for easy installation Milled flats for easy installation Package Contents: Lead & Steel L&S M16A1 Style Flash Suppressor - 1/2X28 Parkerized Three Prong What firearm models does the manufacturer say Lead & Steel M-16A1 Style Suppressor Flash Hider is compatible with? The manufacturer says that Lead & Steel M-16A1 Style Suppressor Flash Hider is compatible with M16A1Lead & Steel 92823: M-16A1 Style Suppressor Flash Hider 1/2 x 28 mm Parkerized Three-Prong Retro Black