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Rosco Bloodline Barrel | Duty-Grade AR Barrels
Rosco Bloodline Barrels — Duty-Grade Performance for Serious Shooters
Precision Engineering. Real-World Durability. Made in the USA.
The Rosco Bloodline Barrel series is trusted by professionals, competitors, and home defenders who demand more from their AR-15, AR-10, or PCC builds.
Built with 4150 CMV steel, finished with QPQ Nitride treatment, and rigorously tested, Rosco Bloodline Barrels are made for shooters who expect consistent performance under pressure.
✅ Duty-Rated | 5.56 NATO, 300 Blackout, 9mm Options
✅ Optimized for Suppressed & Unsuppressed Use
✅ 100% USA Made and MPI Tested
✅ Fast Shipping | Authorized Dealer
🛡️ Why Rosco Bloodline Barrels Set the Standard
Rosco Manufacturing engineered the Bloodline Series to bridge the gap between precision, durability, and affordability.
Whether you’re building a defense rifle, a tactical carbine, or a PCC, the Bloodline barrels deliver the strength and accuracy demanded by real-world shooters.
Key Advantages:
- Proven 4150 CMV Steel
- Corrosion-Resistant QPQ Nitride Finish
- Suppressor-Ready Gas Port Tuning
- Rigorous MPI & Air Gauge Inspection
- Built to Survive Heavy Use & Harsh Conditions
🔥 Rosco Bloodline Barrel Features
- Chrome Moly Vanadium (4150 CMV) Barrel Steel
- QPQ (Quench-Polish-Quench) Nitride Surface Hardening
- Duty-Grade Tolerances for High-Round-Count Reliability
- Optimized Gas Ports for Suppressed/Unsuppressed Balance
- Available in AR-15, AR-10, and PCC Platform Options
- Lightweight, Government, and Medium Profiles
✅ Purpose-built for shooters who train hard and expect more.
📚 Rosco Bloodline Barrel Buyer's Guide
📌 Bloodline Series — Built for the Fight
| Attribute | Rosco Bloodline Barrel |
|---|---|
| Material | 4150 CMV Steel |
| Finish | QPQ Nitride |
| Gas System | Carbine, Mid-Length, Pistol |
| Barrel Lengths | 7.5", 8.2", 10.5", 11.5", 12.5", 14.5", 16" |
| Calibers | 5.56 NATO, 300 Blackout, 9mm PCC |
✅ Designed for every serious AR platform.
📌 Popular Rosco Bloodline Barrel Models
| Barrel Length | Caliber | Gas System | Best For |
|---|---|---|---|
| 7.5" | 5.56 NATO | Pistol | Ultra-compact builds |
| 8.2" | 300 Blackout | Pistol | Suppressed PDWs |
| 10.5" | 5.56 NATO | Carbine | Tactical carbines |
| 11.5" | 5.56 NATO | Carbine | Balanced defense builds |
| 12.5" | 5.56 NATO | Carbine | Suppressor-friendly SBRs |
✅ Options for any mission.
📌 Suppressor Ready, Duty Proven
- Gas ports tuned to maintain reliability when suppressed
- Stronger barrel steel handles heat and pressure better
- Bloodline barrels retain consistent accuracy even after extended firing sessions
✅ Real tactical durability — not just marketing hype.
📌 Easy Installation for Builders
- Compatible with standard AR-15 or AR-10 upper receivers
- 0.750" gas journal for low-profile gas blocks (most models)
- Pre-dimpled options available for easier gas block installation
- Standard barrel nut torque specs apply (30–80 ft-lbs)
✅ DIY friendly or professional-grade build ready.
❓ Frequently Asked Questions (FAQ)
Q: Are Rosco Bloodline barrels made in the USA?
A: Yes. Every Rosco Bloodline barrel is 100% designed, machined, inspected, and finished in the United States.
Q: What calibers are available in the Bloodline series?
A: Rosco Bloodline barrels are available in 5.56 NATO, 300 Blackout, and 9mm for PCC builds.
Q: Are Bloodline barrels suppressor-ready?
A: Absolutely. Gas ports are optimized for reliable suppressed and unsuppressed performance.
Q: What barrel lengths are available?
A: Bloodline barrels are available from 7.5" to 16" depending on caliber and gas system.
Q: What barrel finish is used on Rosco Bloodline barrels?
A: A corrosion-resistant QPQ Nitride treatment for extended life and improved surface hardness.
🛒 Shop Rosco Bloodline Barrels — Performance You Can Trust
When durability, accuracy, and reliability matter most, the Rosco Bloodline Barrel delivers.
Proudly American-made and built for duty use, Bloodline barrels stand ready to upgrade your next AR-15, AR-10, or PCC build.