Low Profile Micro Gas Block, .750"
Low Profile Size Fits Underneath Most Free Float Handguards
Precision Machined from Steel to Exacting Tolerances for Optimal Fit on .750" Diameter Barrels at the Gas PorT
Includes Gas Tube Roll Pin, Serrated Self-locking Set Screws, and Installation Tool
Carbine-Length Gas Tube With Roll Pin
Includes Carbine length gas tube and the 5/64" x 5/16" gas tube roll pin.

16" Barrel:
This 5.56 chambered 16" M4 Profile Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.

Quench Polish Quench (QPQ) is a specialized type of nitrocarburizing case hardening that increases corrosion resistance. It is sometimes known by the brand name of Tufftride, Tenifer Black Nitride or Melonite. QPQ is a huge improvement over Chrome Lined barrels. Unlike chrome lining, where the chrome is built up on the surface, QPQ converts the surface without the risk of dimensional build up.

Barrel
Specifications
Caliber 5.56
Length 16"
Material 4150 Chrome Moly Vanadium
Profile M4
Finish QPQ Corrosion Resistant
Gas System Length Carbine
Gas Block Journal .750"
Dimpled? No
Twist Rate 1:7
Muzzle Thread 1/2x28 TPI
Weight 27.2oz
Barrel Extension M4 Feed Ramps
Target Crown 11 Degree

SKU: KM55616M4-ACAR-UGB01-ACAR-UGT02