New for 2011, this is part of the new rifle line that marks the first commercially available firearms ever offered by Vltor Weapon Systems. All NFA rules apply!

The upper receiver features:

The Legendary MUR-1A Upper Receiver
12.5" M4K Barrel, 4150 Ordnance Steel, Hard Chrome Lined
Vltor VC-1 Flash Suppressor
Milspec Bolt Carrier and MP Tested Bolt
BCM Gunfighter Charging Handle
Vltor CASV-EL Handguard
Diamondhead Flip-Up Rear Sight
Standar Front Sight Assembly

The unique Vltor M4K system allows for the M203 GL to be mounted to the 12.5" barrel.