Sadlak Industries Reinforced QD Post Assemply for M14/M1A Thicker Suptermatch & McMillan Stocks Front Swivel Replacement for mounting QD-Type Bi-Pod The Reinforced Quick Disconnect (QD) Post Assembly replaces the stock M14 front swivel for a more rugged, durable Bi-pod attachment. To eliminate cracking of the stock during heavy recoil use or rough handling, the oval washer design has approx. 3 times the load disbursement over the standard single QD post. Designed for use with a Harris Bi-pod or other Bi-pods using the standard QD post. Reinforced QD Post Assembly includes the following: Interior Oval Nut Plate Exterior Oval Washer Plate QD Post, #10-32 Thread Disc Lock Washer (2 ea) Button Screw, #10-32 1/8" Hex Key