A3 Industries Rear Stock Adapter for Grand Power Stribog 6061 T6 Aluminum Picatinny Black. This stock adapter is configured with Picatinny rail to adapt any side folding stock (or arm brace) designed for use on a rear picatinny rail. The bolt pattern and locating lug on the rear of the adapter provides a positive modular mounting platform for a wide variety of A3 Industries braces and stocks. Also now include a steel Quick Disconnect (QD) socket onto your adapter. This positions your sling mount at the base of the adapter under the hinge. Make all of QD sockets from steel instead of aluminum. QD releases use hardened ball bearings that ride in the groove of the socket serving as a detent while also allowing rotation. Over time these bearings wear out the groove in aluminum sockets and they lose the ability to retain the QD component. Steel sockets eliminate this issue. Specifications for A3 Industries Rear Stock Adapter for Grand Power Stribog: Manufacturer: A3 Industries Condition: New Color: Black Gun Make: Grand Power Gun Model: Universal Gun Type: Carbine Fabric/Material: 6061-T6 Aluminum Additional Features: Picatinny Finish: Type II Low Gloss Anodized Features of A3 Industries Rear Stock Adapter for Grand Power Stribog No modifications to firearm needed Modular design for various cross-platform use Large #10 threads and positive lug for increased mount stability Package Contents: A3 Industries Rear Stock Adapter for Grand Power Stribog What firearm models does the manufacturer say A3 Industries Rear Stock Adapter for Grand Power Stribog is compatible with? The manufacturer says that A3 Industries Rear Stock Adapter for Grand Power Stribog is compatible with UniversalA3 Industries RSA011: Rear Stock Adapter for Grand Power Stribog 6061 T6 Aluminum Picatinny Black