Ultimate Arms Gear Tactical Heckler & Koch H&K HK G3 MP 5 MP5 Submachine Gun Rifle Rail Claw Scope Sight Mount + CQB 1x35 Reticle Dual Red / Green Illuminated Reflex Sight With Sunshade Matte Black Finish - Aircraft Grade Aluminum Construction. Stanag Dimension Will Accept Stanag scopes, Standard Weaver And Picatinny (7/8") Attachments : Sights - Lasers - Lights Etc. Mount Clamps Directly To Top of Receiver. Features 12 Slot Rails. Once Piece Claw Mount- Easy No Gunsmithing Installation ! 4 Separate Reticle Patterns In Both Red and Green. Glare Free, Shock Proof & Fully Coated With An Anodized Finish For Heavy Duty Recoil. Brightness Intensity And Full Windage & Elevation Adjustments. Parallax Free & Unlimited Eye Relief Provides The Shooter A Wide Field Of View And The Ability To Operate With Both Eyes Open. Mount is Desgined To Fit H&K G3 MP5 Rifles.