HQRP Barrel / Weaver / Picatinny Holder / Mount for Flashlights / Scope / Laser Sights plus HQRP Coaster HQRP&reg; Tactical Flashlight Mount plus HQRP&reg; Coaster; Mount Type Place: Barrel, Weaver, Picatinny; Material: Aluminum Alloy; Color:Black; Ring Diameter(mm): 25.4mm/12-22mm; Size:61*21*43.5mm; Usage: Flashlights, Scope, Laser Sights; 200 days warranty!