Silent But Deadly
Most bullets make loud sounds when shot. Which gives away your position when trying to sneak on to an opponent. Now the commandos want to be sneakier with slower but quieter bullets. The rifles in the 5.56, 7.62, and .388 the bullets will travel slow and in won't break the barrier which makes the "crack" sound. Which is why they use a sound suppressor so the sound is not that loud To do it they are gonna have to go back to the future in the late 1890s.
