10.5" M4 5.56 NATO Chrome Lined Barrel 1:7 Twist
- Barrel length: 10.5"
- Barrel Weight: 1.35lbs
- Barrel Material: 4150 Steel
- Caliber: 5.56 NATO
- Twist Rate: 1:7
- Barrel Thread: 1/2 x 28
- Gas Block Size: .750
- Gas System: Carbine
- Barrel Finish: Manganese Phosphate
- Barrel Extension Finish: Manganese Phosphate
M4 extension / M4 feed ramps
1/2 x 28 muzzle thread
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