EDEMO Aimtech Scope Mount For Remington 870 20 Gauge ASM220 EDEMO6. OpticsPlanet Inc is an Authorized US Distributor for Aimtech Rifle Scope Mounts Rings and Bases. The Aimtech ASM-1 and ASM-2 mounts for Remington 1100/1187 and 870 shotguns are the...