Bushmaster's QRC Pro (Quick Response Carbine) features an A4 flat top receiver made from 7075-T6 forged aluminum. It also has a barrel with A2 birdcage-style flash hider, KeyMod mid-length handguard, Bravo B5 6 position collapsible stock and B5 type 23 P-grip.
Brand Bushmaster
Category Tactical Rifles
Caliber 5.56x45mm NATO
Model QRC Pro
Stock Finish Black
Action Semi-Auto
Sights None, Optic Ready
Capacity 30+1
Muzzle A2 Flash Hider
Magazine Type AR-15
Grips Black B5
Hand Right
Handguards Mid-Length KeyMod
Oal 33"-36"
Receiver Finish Black
Receiver Material 7075-T6 Aluminum
Stock Description Bravo B5 6 Position Collapsible
Stock Finish Group Black
Stock Material Synthetic
Thread Pattern 1 / 2"-28 tpi
Trigger Mil-Spec
Twist 1:8"
Weight 6.30 lbs
Barrel Finish Black Nitride
Barrel Length 16"
Caliber Dictionary
The Below Information Has Been Provided From Our Gun Caliber Dictionary And Is Meant For Informational Purposes Only. It Is Not Intended to Describe The Unique Specifications For This Ammunition.
The 5.56X45mm NATO cartridge was designed by James Sullivan, a member of Eugene Stoner's engineering team that developed both the M16 rifle and its original cartridge. The 5.56X45mm NATO was adopted by the U.S. military in 1964 and by NATO in 1980. With bullet diameter of .224-inch, the original M193 military cartridge used a 55-grain bullet at 3250 fps; the current M855A1 cartridge, developed by FN, uses a 62.5-grain bullet at 3020 fps, offering greater range and better penetration. The civilian version of the 5.56X45mm is 223 Remington; the cartridges are dimensionally identical but military chamber dimensions and specifications for military brass are different. It is considered safe to use 223 Remington ammo in a 5.56X45MM NATO chamber, but not a good idea to use 5.56X45mm ammo in a rifle specifically chambered for the 223 Remington. Although the stopping power of .22-caliber bullets remains controversial the 5.56X45mm has served well in now multiple generations of M16 rifles. — Craig Boddington
