Rosco Manufacturing Bloodline 12.5" 5.56 M4 1:7 Twist Black Nitride Cabine Barrel - BL-125-556-M4-7-C
Only 2 left in stock
This 12.5 Rosco barrel is designed to bridge the gap between SBR-Pistol and/ or RECCE platforms and delivers amazing precision performance for its compact size. It is the perfect addition for the person attempting to create the ultimate intermediate patrol platform.
Our Rosco 5.56 (NATO) barrels are designed to meet the modern day carbine shooters requirements. We are a long way from our daddy’s Sporter AR, and those specs just won’t cut it anymore. From properly managed dwell times for SBR’s, to running Suppressed, or setting up a balanced patrol carbine we have incorporated your needs into our engineering. We have successfully accomplished this by picking the right twist rates, gas port diameters, and barrel materials according to the barrel we are making (not a lazy blanket method). We have also balanced input from our consumers and military end users in order to bring you the product you need, not just the one we want to sell you.
Specifications:
- Barrel Length: 12.5
- Barrel Weight: 21.79oz
- Barrel Material: 4150 CMV
- Barrel Caliber: 5.56
- Barrel Profile: Government
- Twist: 1:7
- Barrel Thread: 1/2 x 28
- Gas Block Size: .750
- Gas System Length: Carbine
- Barrel Crown: 11 Degree
- Barrel Finish: Nitride
- Barrel Extension Finish: Nitride
- Weight: 1.5 lbs
- Dimensions: 19.5 × 2.3 × 2.2 in
| Weight | 1.504 oz |
|---|---|
| Dimensions | 14.5 × 3 × 3 in |
| Finish | Nitride / Melonite |
| Barrel Profile | Government / SOCOM |
| Cartridge Compatibility | 5.56 NATO |
| Gas Block Journal | 0.75 |
| Barrel Length | 12.5 |
| Gas System Length | Carbine |
| Platform | AR-15 |
| Twist Rate | 1-7 |
| Muzzle Thread Pattern | 1/2×28 |
| MPN | BL-125-556-M4-7-C |
| UPC | BL-125-M4-556-7-C |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
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United States
2nd year review
My 1st rosco product and I have been very pleased with this barrel no issue quality made holds group I would 100% recommend this barrel in my experience
USGreat Barrel
This is the 3rd Rosco barrel I have used on an AR build. They make a quality product and it is pre-dimpled which ensures the gas block will stay in place during rapid fire. The accuracy is great as well for the money. I will definitely be buying more Rosco barrels in the future.
US12.5” barrel(556)
Very satisfied with the performance and would buy more items related to an AR build
USAwesome barrel
Dimple for gas block is a plus, paired with H2 armaspec srs. Great shooter
USRosco Manufacturing 12.5” Barrel
This is the second Rosco barrel I’ve gotten. They fit great, I recommend them.
