Ultimate Arms Gear 5X "CQB" Tactical Magnifier for Red Dot Scope-Sight : Includes "QD" Quick Detach Weaver-Picatinny Mounting Ring Magnification : 5X Fixed Works with Eotech & Aimpoint Compact Sights and similar Sights/Scopes Capable of switching in a split second from CQB (Close Quarters Battle) to Longer Range use. Superior Quality : Waterproof, Shockproof, Fog Proof