Key Features & Advantages
- Ultra-Compact 4.5" Heavy Profile Barrel: Precision-machined from 4150 Chrome Moly Vanadium steel with a durable Parkerized finish to maximize durability under rapid fire.
- Optimal 1:8 Twist Rate: Engineered to reliably stabilize both supersonic (110–125 grain) and heavy subsonic (190–220 grain) .300 Blackout factory loads.
- Micro-Length Gas System: Tuned micro gas operation ensures reliable cycling and extraction in short-barrel pistol platforms.
- 4" M-LOK Split Rail Handguard: Compact, lightweight skeletonized handguard provides solid mounting slots for weapon lights, hand stops, and accessories.
- Complete Drop-In Assembly: Standard rear charging style; ships complete with a full bolt carrier group (E9310 steel bolt), charging handle, and micro flash hider—ready to attach to any mil-spec AR-15 lower receiver.
Technical Specifications
| Caliber | .300 AAC Blackout |
| Barrel Length | 4.5 Inches |
| Barrel Profile | Heavy Barrel Profile |
| Barrel Material | 4150 Chrome Moly Vanadium Steel |
| Barrel Finish | Parkerized |
| Twist Rate | 1:8 |
| Gas System | Micro-Length (0.750" Gas Block System) |
| Handguard | 4" M-LOK Split Rail |
| Muzzle Device | Micro Flash Hider (5/8" x 24 Thread Pitch) |
| Receiver Material | 7075 Forged Billet Aluminum Flat-Top |
| Charging Style | Rear Charging Style |
| Bolt Material | E9310 Steel |
| Weight | 3.7 lbs |
| SKU | UAF-1202-300MPHB4.518P.875-4ASRMFH |
