The original CQ rifle was a copy of the M16A1, and had a 20-inch barrel and fixed stock. The CQ-A carbine is a copy of the M4 carbine, with a 14.5-inch barrel and collapsible stock.

In World War II, the company started to produce the Reising submachine gun. After the war, H&R produced the M1 Garand rifle for postwar contracts, and later the M16A1 rifle during the Vietnam War. 14.