Key Performance Features
- Left Side Charging (Gen 2): BCA's patent-protected side-charging mechanism allows right-handed shooters to cycle the action using their support hand while maintaining trigger control and sight alignment.
- 16" Parkerized M4 Barrel: Precision-machined from 4150 Chrome Moly Vanadium steel, featuring an M4 contour profile and heavy-duty Parkerized finish for outstanding durability and corrosion resistance.
- Versatile 1:8 Twist Rate: Perfectly stabilizes a wide range of standard 5.56 NATO and .223 Remington ammunition, from lightweight 55-grain target rounds to heavier 75-grain match bullets.
- 15" M-LOK Split Rail Handguard: Full-length skeletonized handguard provides ample modular space for mounting optics, lights, foregrips, and accessories while keeping weight to a minimum.
- Complete Drop-In Ready Unit: Ships fully assembled with a heavy-duty E9310 steel bolt carrier group (BCG), side-charging handle, standard A2 flash hider, and carbine-length gas system.
Technical Specifications
| Caliber | 5.56 NATO / .223 Remington |
| Barrel Length | 16 Inches |
| Barrel Profile | M4 Contour |
| Barrel Material | 4150 Chrome Moly Vanadium Steel |
| Barrel Finish | Parkerized |
| Twist Rate | 1:8 |
| Gas System | Carbine Length (0.750" Gas Block) |
| Handguard | 15" M-LOK Split Rail |
| Upper Receiver | 7075 Billet Aluminum Flat-Top |
| Charging Style | Left Side Charging (Gen 2) / Right Eject |
| Bolt Material | E9310 Steel |
| Thread Pitch | 1/2" x 28 |
| Weight | 5.3 lbs |
| SKU | UASC-2296-L556CM41618P-15ASR |
