light machine gun with fixed headspace and quick change barrel feature. The M249 engages point targets out to 800 meters, firing the improved NATO standard 5.56mm cartridge. The SAW forms the ...
The General Dynamics option has a 20-inch barrel, just two inches less than the M249. The placement of the ... three-piece brass case with stainless steel hard and lock washer for its ammunition ...
It works with the M4 Carbine, the M249 machine gun, and the H&K and M16A2 rifles. It is suitable for use in most weapons with a 1-in-7 barrel twist. The M855A1 has a copper-jacketed steel core ...