No Gunsmithing, Contoured To Fit Receiver
Firmly attaches to both sides of receiver using existing screw/pin holes, and won’t obstruct operation. Recoil transfers to receiver for greater strength. Multiple slots provide eye relief adjustment for mounting scopes and electronic sights. Open sight channel allows use of iron sights.
Big Book Catalog, Issue:68, Page:263
SPECS: Aluminum, anodized, black. Approx. 6" (15cm) long. Two 1" Weaver-style rings included. Rem. 870/1100/11-87 - fits 2¾" and 3" 12 gauge models. Rem 870 Magnum fits 3½" Magnum 870 12 gauge shotguns only.