The M4/M4A1 5.56mm Carbine is a lightweight, gas operated, air cooled, magazine fed, selective rate, shoulder fired weapon with a collapsible stock. It is now the standard issue firearm for most ...

US Air Force personnel are being trained to conduct a range of skills outside their normal job roles to ensure ACE readiness.

Airmen and guardian recruits are now carrying practice M4 rifles during boot camp at Joint Base San Antonio-Lackland, Texas, ...

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 ...