Will the Rosco 8.2 300 Blackout Barrel work with subsonic and supersonic ammo?

Yes. This barrel is designed to handle both subsonic and supersonic 300 Blackout loads efficiently, especially when paired with a suppressor.

Is this barrel suppressor-ready?

Yes. The 5/8x24 threaded muzzle is compatible with most common .30 caliber suppressors and muzzle devices.

What material is the barrel made from?

It is constructed from 4150 CMV steel and features a black nitride finish for durability and corrosion resistance.

Is this barrel compatible with AR pistols?

Yes. Its 8.2-inch length and pistol-length gas system make it ideal for AR pistols and SBR builds.

Rosco 8.2 300 Blackout Barrel – Suppressor-Ready AR Barrel

**Rosco Bloodline Barrel 8.2 300blk Hb 1/7** $146.70

**Rosco Purebred Barrel 8.2 300blk** $166.09

**Rosco Bloodline 8.2 300blk Sauce Pack** $328.25

Rosco 8.2 300 Blackout Barrel – Suppressor-Ready AR Pistol Barrel

The Rosco 8.2 300 Blackout Barrel is purpose-built for shooters who demand high performance from a compact AR pistol or SBR platform. Whether you're building a defensive carbine, a suppressed setup, or a CQB tool, this 8.2-inch Rosco barrel is engineered to deliver accuracy, reliability, and versatility across both subsonic and supersonic 300BLK loads.

Crafted from 4150 CMV steel with a nitride finish and featuring a 1:7 twist rate, this 300 Blackout barrel is part of Rosco’s acclaimed Bloodline series — trusted by professionals for its durability and tight manufacturing tolerances.

🛒 Key Specifications – Rosco 8.2" 300 Blackout Barrel

Feature	Detail
Caliber	.300 AAC Blackout
Length	8.2 inches
Twist Rate	1:7 RH
Gas System	Pistol-length
Barrel Profile	Government
Material	4150 CMV Steel, Nitride Coated
Thread Pitch	5/8x24 (Suppressor-Ready)
Muzzle	Threaded
Series	Rosco Bloodline
Use Case	Subsonic/Supersonic, Suppressed, Tactical Builds

✅ Supports subsonic and supersonic ammo
✅ Ideal for suppressed or compact CQB AR pistols
✅ Built for reliability and longevity under harsh conditions

✅ Why Choose the Rosco 8.2 300 Blackout Barrel?

🔩 Perfect for Suppressed Builds – 5/8x24 threading makes it suppressor-ready out of the box
🧱 Rugged Construction – 4150 CMV steel with nitride finish resists heat, wear, and corrosion
🎯 Precision Performance – 1:7 twist stabilizes heavier subsonic rounds and lighter supersonic ammo
⚙️ Optimized for AR Pistols & SBRs – Compact size delivers excellent handling in tight spaces
🔄 Part of the Rosco Bloodline – Engineered to meet military-grade performance standards

📦 What’s Included

1x Rosco 8.2" 300 Blackout Bloodline Barrel
Factory-sealed packaging
Technical spec sheet (optional)

📚 Frequently Asked Questions (FAQ)

Q: Will this barrel work with both subsonic and supersonic 300BLK?
A: Yes. It is designed for optimal performance with both subsonic and supersonic loads, especially in suppressed builds.

Q: What kind of suppressor threading does it use?
A: The barrel has a standard 5/8x24 thread pitch, compatible with most .30 cal suppressors and muzzle devices.

Q: Is this barrel nitride coated?
A: Yes. It’s finished with a black nitride treatment to enhance surface hardness, corrosion resistance, and wear tolerance.

Q: Is it suitable for AR pistols?
A: Absolutely. The 8.2" length is perfect for AR pistol and SBR configurations using a pistol-length gas system.