Ati Milsport300Blk 8.5 Mlok 7 Psb Blade 30Rd
The American Tactical Imports Milsport 300 Blackout is a modern, configurable rifle built on a proven platform that works hard whether you're shooting subsonic loads at the range, hunting medium game, or running tactical drills. This 8.5-inch barreled setup in 300 BLK pairs a compact profile with a 1-in-7 twist rate optimized for the cartridge's heavier projectiles—a real advantage if you're working with the full spectrum of 300 Blackout ammunition, from 125-grain supersonic to 220-grain subsonic rounds.
The MLOK slots built into the handguard give you genuine flexibility to mount lights, grips, sling attachments, or other accessories exactly where you want them, without the clutter of permanent Picatinny rails. The 30-round magazine and Picatinny Safety Blade (PSB) complete a no-compromise working rifle that feels responsive and manageable in tight quarters or from a bench.
American Tactical Imports has built a reputation for delivering rifles that don't apologize—no hype, no pretense, just solid engineering and real-world usability. The Milsport line carries that ethos: straightforward, modular, and ready to work. Whether you're new to 300 Blackout or adding another capable platform to your safe, this short-barrel rifle stands up to hard use.
Key Features
- 300 Blackout caliber optimized for both subsonic and supersonic loading
- 8.5-inch barrel with 1-in-7 twist rate for heavier projectiles
- MLOK-compatible handguard for tool-free accessory mounting
- Picatinny Safety Blade (PSB) for ambidextrous manipulation
- 30-round magazine included
- Compact, maneuverable platform for tactical, hunting, and range use
Specifications
| Caliber | 300 Blackout |
| Barrel Length | 8.5 inches |
| Barrel Twist | 1-in-7 |
| Handguard | MLOK |
| Safety | Picatinny Safety Blade (PSB) |
| Magazine Capacity | 30 rounds |
| Manufacturer | American Tactical Imports |
Frequently Asked Questions
Is this rifle good for subsonic 300 Blackout ammunition?
Yes. The 1-in-7 twist rate is designed to stabilize heavier bullets, making it well-suited for subsonic loads (typically 208–220 grains) where slower twist rates can fail to stabilize effectively.
Can I add a suppressor or other accessories to this rifle?
The MLOK handguard makes it easy to mount lights, grips, and sling attachments using MLOK-compatible hardware. The barrel and muzzle threading are not specified in the available data; verify directly with Bosque Outdoors if suppressor compatibility is a priority.
What does the Picatinny Safety Blade do?
The PSB is an ambidextrous safety lever that mounts in a Picatinny slot, allowing right- and left-handed shooters to manipulate the safety without repositioning their grip.
Is the 30-round magazine included?
Yes, the rifle ships with one 30-round magazine.

