Rock River Arms
Rock River Arms AR15 H Carbine Buffer - 3.8 ounce
Warning: Last items in stock!
Most all AR15 carbines, especially those with carbine length gas need an "H" (heavy) buffer. Many manufacturers don't include them in their carbines because the standard buffers are cheaper as they do not have a tungsten weight in them. Used in 5.56 NATO / .223 Rem, 300 Blackout, 6.5 Grendel, 6.8 SPC, etc.