The leapers RGWM-30M4 UTG 30mm Medium Profile Picatinny/Weaver Scope Rings are see-thru for iron site use. The UTG scope rings caps have 4 hex screws per ring to secure the scope and 1 hex screw bolt on each ring to the gun piccatiny/weaver mount. rings have black matte finish with special tape inside the rings keeps your scope tight without excessive clamp pressure! Fits Scopes up to 50mm objetive, 4 Top Screws.