This 5.56 chambered 18 inch Modern Series Barrel is machined from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish and QPQ coated M4 feed ramp extension.
This barrel features a longer .750” profile dimension necessary for proper installation of the OPS Inc 12th model collar and suppressor.
Specifications:
- Length: 18″
- Material: 4150 Chrome Moly Vanadium
- Profile: SPR Rifle Length with Ops 12 Profile
- Finish: QPQ Corrosion Resistant
- Gas System Length: Rifle Length
- Gas Block Journal: .750″
- Twist Rate: 1:7 inches
- Muzzle: 1/2×28 Threaded
- Weight: 41 oz
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