KNS Precision Stock Adapter without Flange Features The KNS Precision Inc. Stock Adapter without Flange lets shooters mount a Picatinny style folding stock such as the SIG MPX folding stock in place of a traditional AR-15 style buffer tube. Many firearms use the AR-15 buffer tube attachment point to mount common stocks and braces without mechanically requiring the tube to house an in line buffer spring and this adapter provides a modular alternative for those builds. The kit consists of two machined aluminum parts an adapter plug and a rail section secured together and to the firearm using an included hex socket bolt and lock washer. This two piece design keeps installation straightforward while providing a solid mounting interface. Finished entirely in matte black aluminum the adapter is built for applications where the bolt carrier and buffer tube do not protrude past the receiver ring. It will not function on standard configuration AR-15 rifles that require a buffer and buffer spring and this without flange version requires a take down pin that does not rely on a spring or detent. This makes it best suited for specific platforms like certain AR-pattern pistols using an MCX style folding stock interface. Shooters working on these specialized builds will find this adapter a precise purpose built solution for stock conversion. KNS Precision Stock Adapter without Flange Specifications Manufacturer: KNS Precision Model: Stock Adapter without Flange Color: Black Finish: Matte Material: Aluminum Compatible Hosts: AR-15 / MCX Available At: GrabAGun