Rosco Manufacturing167513548
Rosco Mfg Bl-125-M4-556-7-C Bloodline 5.56 Nato 12.50" Nitride 4150 Cmv Brl$154.80
Availability: In Stock
The Rosco Bloodline 5.56 NATO barrel is a 14.5-inch nitride-finished rifle barrel built for shooters who demand a properly engineered platform rather than a generic one-size-fits-all approach. Rosco Manufacturing has earned respect in the shooting community by tailoring gas port sizing, twist rate, and material selection to match the specific demands of modern carbine builds—whether you're running an SBR, suppressed rifle, or a balanced patrol setup. This Bloodline model is engineered specifically for compact builds and pistol uppers where dwell time and reliability matter.
Constructed from 4150 CMV steel and finished with a nitride coating, the barrel resists corrosion and holds up to frequent shooting and suppressed use. The .750-inch gas block journal gives you proven compatibility with standard AR handguard systems. Rosco's engineering here isn't guesswork; it's the result of feedback from military users and serious shooters who understand that a short barrel's performance depends on precision gas management, not marketing copy.
This is the kind of barrel that rewards shooters building a short-barreled rifle or pistol upper who refuse to compromise on reliability. If you're assembling an SBR, optimizing a suppressed gun, or building a compact defensive carbine, the Bloodline delivers the engineering rigor you need. Please note that if your build falls under NFA regulations (such as a registered short-barreled rifle), all applicable federal rules apply.
| Caliber | 5.56 NATO |
| Barrel Length | 14.5 inches |
| Material | 4150 CMV steel |
| Finish | Nitride |
| Gas Block Journal Size | .750 inch |
| Brand | Rosco Manufacturing |
Yes. The Bloodline 14.5-inch barrel is specifically engineered for SBR platforms with gas port sizing and dwell management optimized for shorter barrels. If you're building a registered NFA short-barreled rifle, all applicable federal regulations apply.
The barrel's gas port engineering and 4150 CMV construction are designed with suppressed shooting in mind, making it a solid choice for that application.
The .750-inch journal is the standard gas block size for AR-platform handguards, giving you broad compatibility with most modern AR rail systems.
The barrel features a nitride finish, which provides corrosion resistance and durability for field use and suppressed shooting.
SKU: 167513127 • Width: 3.1in • Height: 2.4in • Depth: 18.8in • Weight: 1.875oz
Availability: In Stock
The Rosco Bloodline 5.56 NATO barrel is a 14.5-inch nitride-finished rifle barrel built for shooters who demand a properly engineered platform rather than a generic one-size-fits-all approach. Rosco Manufacturing has earned respect in the shooting community by tailoring gas port sizing, twist rate, and material selection to match the specific demands of modern carbine builds—whether you're running an SBR, suppressed rifle, or a balanced patrol setup. This Bloodline model is engineered specifically for compact builds and pistol uppers where dwell time and reliability matter.
Constructed from 4150 CMV steel and finished with a nitride coating, the barrel resists corrosion and holds up to frequent shooting and suppressed use. The .750-inch gas block journal gives you proven compatibility with standard AR handguard systems. Rosco's engineering here isn't guesswork; it's the result of feedback from military users and serious shooters who understand that a short barrel's performance depends on precision gas management, not marketing copy.
This is the kind of barrel that rewards shooters building a short-barreled rifle or pistol upper who refuse to compromise on reliability. If you're assembling an SBR, optimizing a suppressed gun, or building a compact defensive carbine, the Bloodline delivers the engineering rigor you need. Please note that if your build falls under NFA regulations (such as a registered short-barreled rifle), all applicable federal rules apply.
| Caliber | 5.56 NATO |
| Barrel Length | 14.5 inches |
| Material | 4150 CMV steel |
| Finish | Nitride |
| Gas Block Journal Size | .750 inch |
| Brand | Rosco Manufacturing |
Yes. The Bloodline 14.5-inch barrel is specifically engineered for SBR platforms with gas port sizing and dwell management optimized for shorter barrels. If you're building a registered NFA short-barreled rifle, all applicable federal regulations apply.
The barrel's gas port engineering and 4150 CMV construction are designed with suppressed shooting in mind, making it a solid choice for that application.
The .750-inch journal is the standard gas block size for AR-platform handguards, giving you broad compatibility with most modern AR rail systems.
The barrel features a nitride finish, which provides corrosion resistance and durability for field use and suppressed shooting.
SKU: 167513127 • Width: 3.1in • Height: 2.4in • Depth: 18.8in • Weight: 1.875oz