Samson Manufacturing Corp. Picatinny Adapter, Fits 1913 Railed Receiver to MCX/MPX Style Stock, Matte, Black 04-06114-01 The Samson Picatinny Side Folding Stock Adapter is a robust and versatile solution for shooters seeking superior adaptability and precision. Designed to seamlessly integrate with a variety of platforms" this stock adapter ensures a secure and stable attachment