DSI 300 Blackout 12.5" 1:7 Threaded Nitride Barrel
496377049467
Description
DSI .300 Blackout 12.5" AR-15 Barrel
The DSI 12.5" .300 Blackout Barrel is manufactured in-house for compact AR-15 pistol and registered SBR builds. Machined from 4142 chromoly steel, it uses a pistol-length gas system and 1:8 twist for .300 Blackout ammunition.
The barrel features a .750-inch gas block journal, 5/8-24 threaded muzzle, and nitride-treated finish for wear and corrosion resistance. The gas system is tuned for reliable operation with subsonic .300 Blackout ammunition when shooting suppressed, while remaining suitable for supersonic ammunition.
Proudly made in the USA.
Technical Specifications
| Caliber | .300 Blackout |
| Barrel Length | 12.5 inches |
| Material | 4150 CMV Steel Mil-B-11595 |
| Twist Rate | 1:8 |
| Gas System | Pistol length |
| Gas Tuning | Tuned for subsonic .300 Blackout ammunition when shooting suppressed |
| Gas Block Journal | .750 inch |
| Muzzle Thread | 5/8-24 |
| Finish | Nitride treated |
Specifications subject to change without notice.