Rosco Manufacturing K9 11.5" 5.56 Hybrid 1:7 Twist Black Nitride Patrol Barrel - K9-115-HY-DUFFY-556-7-PT
Out of stock
Rosco Manufacturing K9 11.5″ 5.56 Hybrid 1:7 Twist Black Nitride Patrol Barrel
The K9 11.5 offers a proprietary patrol-length gas system that is smoother than carbine-length and more reliable than mid-length. It features an optimized gas port that runs reliably suppressed and/or unsuppressed. The K9 continuous taper is the most effective profile for dissipating heat from hard use. With weight shifted to the back of the barrel, modern attachments on the front create a perfectly balanced and better-handling rifle. Updated target crown carried over from the Purebred series with improved harmonics, fit, and finish. We recommend a minimum handguard length of 10″ with this barrel.
NOTE: COMES WITH PATROL LENGTH GAS TUBE
Specifications
- Barrel Length: 11.5″
- Barrel Weight: 25.47 oz
- Barrel Material: 416R
- Barrel Caliber: 5.56
- Barrel Profile: Continuous
- Twist: 1:7
- Barrel Thread: 1/2×28
- Barrel Gas Block Size: 0.750
- Gas System Length: Patrol
- Barrel Crown: 11 Degree
- Barrel Finish: Nitride
- Barrel Extension Finish: Nitride
| Weight | 25.47 oz |
|---|---|
| Finish | Nitride / Melonite |
| Barrel Profile | Continuous |
| Cartridge Compatibility | 5.56 NATO |
| Gas Block Journal | 0.75 |
| Barrel Length | 11.5 |
| Gas System Length | Patrol |
| Platform | AR-15 |
| Twist Rate | 1:7 |
| Muzzle Thread Pattern | 1/2×28 |
| MPN | K9-115-HY-DUFFY-556-7-PT |
| UPC | 850039693120 |
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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