DEZ Arms, Inc., Match 4150 CMV 22" Rifle Gas 6.5 mm Creedmoor barrel with installed M4 feed ramped barrel extension fits a .308, DPMS pattern upper receiver. Uses a rifle-length gas system and forearm (not included). Straight flute. Nitride finish*,  5/8 x 24 threaded and 11 degree target crown.

Requires: Complete 7.62 x 51 bolt assembly (not included); however 6.5 creedmoor high pressure bolt is recommended;  .308 upper/lower receiver (AR-10)

DEZ Arms' custom machined match barrels are made from match 4150 CMV steel manufactured in the USA. Barrels are head spaced with M4  feed ramped extension installed, and pre drilled gas port hole. Barrels are particle tested, air gauged, concentrically cut and muzzle threaded 5/8” x 24" twist to accept flash hiders/suppressors, stressed relieved, turned on center to prevent accuracy robbing distortion when the barrel heats up, and hardened to 26-33 Rc giving the barrel a long life. The 11 degree crown, polished chamber and lapped bore makes the difference! Our pulled-button rifling produces a superbly accurate bore diameter with uniform rate of twist. Fluted models feature DEZ unique fluting designs to improve rigidity and aid in barrel cooling.

*Nitride finish interior and exterior finish which is also applied to the barrel extension and gas port during heat treating and creates a monolithic black finish that is superior to hard chrome. The process does not add material to the internal dimension of the bore, increasing surface hardness to between 58-65 HRC, lowering bore friction, enhancing surface lubricity, improving running wear performance, enhancing corrosion resistance and heat resistance over industrial hard chrome.

The match barrel is machined to rigid specifications

 NOTE: 22" BARREL IS PICTURED 

Detailed Specs:

Caliber: 6.5 mm Creedmoor

Length: 22" 

Contour: Bull (Fluted)

Twist Rate: 1x8

Muzzle: 5/8"-24 Threaded / Crowned

Diameter at Gas Port: .936"

Gas Type: Rifle

Material: 4150 CMV

Rifling: Button / 6 Groove

Finish: Black Nitride/QPQ

Weight (Varies on fluting): Fluted Threaded - 4 Lb. 2.0 Oz.