The ATI Milsport Complete Upper .300 BLK 8.5" Barrel 7" M-LOK Handguard & Polymer Flip-Up Sights offers a compact, ready-to-mount upper assembly for your AR-15 pattern lower. Built around an 8.5-inch barrel chambered in .300 Blackout and paired with a slim 7-inch M-LOK handguard, this upper is designed to provide a balanced profile with modern ergonomics and accessory mounting flexibility.
This configuration is well suited for range use, training, and compact builds where maneuverability and accessory space matter. The included polymer flip-up sights give you an immediate sighting solution while leaving room for your preferred optic on the top rail. With its straightforward design and dependable construction, this upper reflects American Tactical’s focus on practical performance and consistent quality.
Key Features:
- Manufacturer: American Tactical
- Model: Milsport Complete Upper ATI15MS300ML8
- Caliber: .300 BLK
- Barrel Length: 8.5"
- Handguard: 7" M-LOK
- Sights: Polymer Flip-Up Sights
| __Model | Milsport |
| __Capacity | NA |
| __Barrel Length | NA |
| __Optic Footprint | NA |
| __Action | NA |
| __Caliber | .300 Blackout |
