Midwest Industries HK MP5 End Plate Adaptor, Picatinny, Aluminum, Anodized Finish, Black MI-MP5-PEPA Built for the classic MP5 platform" this Midwest Insustries end plate adaptor allow for the attachment of a folding stock or brace. Easy to install and crafted from hard coat anodized 6061 aluminum" this adaptor is compatible with the HK MP5" and several clone variants such as the Century AP5" Zenith ZF5" and Military Arms Corporation MAC 5.