Colt Enhanced Patrol Rifle (EPR) Upper is the next step in field-tested patrol rifle components. The LE6933-EPR and R0933-EPR Commando Enhanced Patrol Rifle upper receiver features a full-length Centurion MLOK Handguard, as well as a free-floated barrel. This barrel is the Colt standard 11.5" chrome-lined M4, with an A2 flash hider on the front. With a 1/7 twist Mil-Spec MP-tested barrel, this upper has a direct gas operating system which negates the need for the conventional operating rod and results in overall lighter-weight frame for increased tactical advantage. Suited for the full range of 5.56mm ammunition, the straight-line construction distributes recoil directly into the shoulder, increasing both comfort and handling abilities. A cartridge case deflector enables both right and left handed shooters, and the flash hider reduces flash and dust, while the ejection port cover protects the insides from debris when in storage. The EPR upper field strips without need for additional tools or assistance, and the flat-top receiver allows for easy optic mounting. Specifications: AssemblyComplete Assemblies Barrel ContourM4 Barrel Length11.5 Barrel Material41V50 Chrome Moly Vanadium Steel BrandColt Caliber Gauge5.56 NATO Gas System LengthCarbine Gas System TypeDirect Impingement Handguard11 in M-LOK Rail Muzzle DeviceA2 Flash Hider Twist Rate1:7