BKL 300 0.6" Long Dovetail Scope Ring - Single is designed for the shooter who needs stability and prefers independent rings. Model 300 is for 30mm scope tubes and designed to fit all standard 3/8" guns and 11mm airgun dovetail rails. >> Technical Specifications of BKL 300 Dovetail Scope Ring - Single: >> - Fits 30mm scope tubes; > - Overall Length: 0.60"; > - Clamp Length: 0.60"; > - Ring Width: 0.60"; > - Bottom of Mount to Bottom of Scope Tube: 0.979". > - Weight: 2.2 oz; > - This item sold as a single mount only. >> BKL's rings and risers are now available as individual items instead of just pairs. > BKL Singles can be mixed and matched to suit your specific shooting application.>> BKL Mounts features: > - Strong One-Piece Clamping Base allows easy mounting of 30mm scopes; > - Patented Auto-Centering technology solves the problems created by varying mounting rail widths. > - Clamping Legs move equally as the clamping screws are tightened keeping the scope centered on the rail. > - BKL mounts are manufactured from aircraft-grade aluminum alloy on state of the art machinery in Texas. >> BKL Technologies is the manufacturer of the largest selection of gun and airgun scope mounts in the U.S. Competition-grade scope mounting system includes scope mounts, scope rings, dovetail to weaver adaptors, and scope risers that utilize a quick-installing and self-aligning clamping system that fits both 11mm and 3/8" dovetails. BKL mounts are compatible with popular gun and airgun manufacturers. >> Try BKL, and discover why many shooters use no other mount.