BUSHMASTER ACR .223 SEMI-AUTOMATIC
The Bushmaster ACR is a fully modular firearm where the user is able to change the barrel length and caliber on the fly. It was originally developed to replace the M16 as the U.S. Military service rifle. To date, Poland is the only country to use the ACR in combat.
Muzzle velocity: 3,250 ft/s (990 m/s)