Higoo 1.38-Inch 1.38" 35MM Scope Ring Adaptor W/ Picatinny/Weaver Rail, Tactical Barrel Clamp Mount With Rail for Scope Flashlight Laser Sight Precision Machined Out of Premium 6061 Aircraft Aluminum Single Weaver-style 1.38 inch scope adapter Lets you mount such accessories as red dot sight, laser, or flashlight 4 slots picatinny/weaver rail for scope/laser sight/flashlight