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 ...

For illustrative purposes. (Janes/ Amael Kotlarski) Heckler & Koch (H&K) is currently developing a 5.56×45 mm version of the HK421 light machine gun (LMG), which is currently chambered in 7.62× ...