The Yankee Hill Machine 9mm Bolt Buffer YHM-925-A  designed for carbine AR-15 stocks is manufactured from high quality stainless steel and features extra weight and length for 9mm AR’s. The added length helps prevent breakage of the bolt catch. Includes a mil. spec. bumper. The buffer weight is 5.9 oz which places it between the 5.4 oz H3 and 6.08 oz VLTOR A5-H3 buffers.

Yankee Hill Machine has been in 9mm AR production longer than most and they know the platform well.