CMMG 10.4-inch Barrel for PS90 SBR Builds
Convert your PS90 into a compact, compliant short-barreled rifle with the precision-machined CMMG 10.4-inch barrel. Machined from 4140 chrome-moly and finished with salt-bath nitride (SBN), this barrel balances durability, accuracy, and platform-specific function for PS90 SBR builds.
Key Specifications
- Length: 10.4 inches — intended for registered SBR configurations
- Twist Rate: 1:9 — optimized for 5.7×28mm
- Material & Finish: 4140 chrome-moly (4140CM) with Salt Bath Nitride (SBN)
- Contour: MT — balanced for handling and weight
- Thread Pitch: 12mm × 1.0 LH — compatible with P90/PS90 muzzle devices
- Muzzle Device Requirement: A compatible muzzle device is required for correct barrel retention and proper installation; the barrel will not install correctly without one.
Why Choose This Barrel
- Designed as the core component for safe, reliable PS90 SBR conversions.
- Threaded to accept platform-specific muzzle devices, suppressors, or adapters.
- Durable construction to withstand high round counts and rigorous use.
- Muzzle device selection available on this page for proper barrel retention.
Installation Note
The PS90 system depends on a properly installed muzzle device for barrel retention. This barrel will not install correctly without a compatible muzzle device—professional installation by a qualified gunsmith is recommended.
Need a muzzle device? Browse PS90-compatible options: PS90 muzzle devices.
Need help removing your factory barrel shroud? See the PS90 Barrel Shroud Removal Jig System for a safe, reliable method.
FAQ
Is this barrel intended for SBR conversions?
Yes — this 10.4-inch barrel is intended for short-barreled PS90 builds. Ensure you have any required approvals before installing.
What muzzle device do I need?
Use a muzzle device that matches the 12mm × 1.0 LH thread pitch for correct retention and function. Select a PS90-specific device or a compatible adapter from our muzzle devices selection.
Can I use a suppressor?
Yes—when paired with a compatible muzzle device or adapter rated for 5.7×28mm and the listed thread pitch.
All NFA rules apply
