"Aimtech ASM3 Dovetail Scope Mount For Mossberg 500 12 Ga Satin Black Finish These shotgun mounts are for the Mossberg 500 series pumps (ASM3) and the Model 835 Ulti-Mag (ASM-6). The inverted ""vee-way"" centers the mount over the receiver and peaks high enough for the shotguns bead sight to still be used. Installs in just minutes with the installation screws and Allen wrenches necessary provided with the mount. Weighs 4 ounces. SPECIFICATIONS: Mfg Item Num: ASM3 Category: BASES Type :Scope Mount Model :Mossberg 500 Style :Dovetail Misc :Accepts Weaver Style Rings Finish :Black Satin"