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AR-15 8.5" Barrel M4 Contour, 1:7 Twist, .223/5.56, Stainless Finish

MPN: 1158-B556PM48.517(SS)  |  UPC: ITM228219

PRODUCT DESCRIPTION

This premium grade AR-15 Barrel is a 8.5" M4 contour profile barrel made of 416R Stainless Steel. This model utilizes a carbine length gas system with a 1:7 twist rate. The barrel is chambered in .223/5.56 NATO and machined with M4 feed ramps in the barrel extension.

Don't forget the AeroShell 33MS Mil Spec Armorer's Grease!

Premium Grade AR-15 Barrel 8.5" M4, Carbine, W/ 1:7 Twist, .223/5.56, Stainless Steel

Carbine gas system and barrel extension installed with M4 feed ramps.

100% American made. Barrels are manufactured from two types of steel.

  • 4150 Gun Quality Steel, Heat Treated to RC 28-32 Hardness, and Stress Relieved.
  • 416 Stainless Steel, Heat Treated to RC 28-32 Hardness, and Stress Relieved.

 

They are Drilled, Reamed, Rifled, Turned, and if Applicable, fluted on CNC Machines. All Finished Barrels go through a 100% Inspection Process.

Inspections Equipment includes CMMs and Air Gauges for the Bores. Our Barrels are manufactured under the ISO-9002 Quality Systems.

SPECS
Additional No
SKU ACC-B556PM48.517-SS
Country of Manufacture United States
License Requirement None
Manufacturer US Contractor
Mfg. Part Number 1158-B556PM48.517(SS)
UPC ITM228219
Caliber/Gauge .223 / 5.56
Action No
Barrel Length 8.5"
Barrel Twist 1:7
Barrel Bore Type Fully Rifled
Barrel Finish Stainless
Barrel Fluting None
Barrel Profile M4 Contour
Mount Type No
Beam Color No
Firearm Fit AR-15
Threaded Barrel Yes
Condition New
Free Shipping No
Weight 1.50 Lbs
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