Mossberg 500 scope mount for 20 gauge shotguns will also fit Maverick 88 20 Gauge Shotguns. This mossberg 500 20 gauge saddle mount has a full length weaver / picatinny style scope rail base. Scope mount fits Mossberg 500 and Maverick 88 20 Gauge Shotguns. Perfectly contoured to shotgun receiver installs using existing port holes. Scope mount is made from lightweight aircraft aluminum. Satin black finish. Fast and easy to install.