Features & details GOTICAL Claw Scope Mount for MP5 MK5 HK G3 GSG5-Hunting rifle picatinny Weaver Rail Handguard - Heavy Duty Sight Scope Mounts( Metal) Metal Construction Matte Black Fits Real Steel & Airsoft Guns Adds an upper rail to any M5, MK5, & MP5 style gun directly to the top of the receiver ,Accepts all weaver standard rings Finish is black anodized aircraft grade aluminum