55DDF0A : Barrel Sub-Assm, 12.5" MR 4140CM SBN, 5.56mm
SKU
166060
Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced.
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- 12.5?
- Multi Role Profile
- 4140 Chrome Moly
- Salt Bath Nitride Finish inside and out
- 1:7 Twist
- 5.56×45 NATO Chamber
- Threaded 1/2-28
- Carbine length gas port
- .750? Gas Journal
Barrel Parts | Barrels |
---|---|
Compatibility | AR15 |
Caliber/Gauge | 223 Rem / 5.56x45 NATO |
Ported or Threaded | Threaded |
Barrel Length (inch) | 12.50 |
Manufacturer Number | 55DDF0A |
UPC | 815835016221 |
Color | Black |
Brand | CMMG |