Description
The American Tactical Alpha Maxx RIA .300 Blackout 16″ 9″ M-LOK is a practical, everyday modern sporting rifle that delivers the proven .300 AAC Blackout cartridge in a no-nonsense package. With a 16-inch threaded barrel, a 9-inch polymer M-LOK handguard, and a 30+1 capacity, it’s built for hunters and shooters who need a reliable carbine for the field or the range without breaking the bank.
| Manufacturer | American Tactical Imports (ATI) |
|---|---|
| Model | Alpha Maxx RIA |
| Material | Polymer stock and handguard; steel barrel and receiver |
| Compatibility | .300 AAC Blackout ammunition (supersonic and subsonic) |
| Finish | Matte black |
| Weight | Approximately 6.5 lbs (per manufacturer specs) |
| Condition | New |
Key Features
- 16-Inch Threaded Barrel – This barrel length balances maneuverability with velocity, and the threading (5/8×24) lets you add a suppressor or muzzle brake. Why it matters: You can run subsonic loads quietly with a can, or keep it loud and fast for hunting hogs or deer inside 200 yards.
- 9-Inch Polymer M-LOK Handguard – The free-float M-LOK design lets you attach lights, grips, or bipods directly. Why it matters: You can customize the rifle for your exact hunt or range setup without extra adapters.
- ATI MM4 Synthetic Stock – Adjustable for length of pull and cheek height, this stock is tough and lightweight. Why it matters: A proper fit means better accuracy and comfort during long sits in a blind or on the line.
- Flip-Up Front and Rear Sights – These iron sights are ready out of the box. Why it matters: You don’t need to buy optics immediately; the rifle is functional from the moment you open the case.
- 30+1 Magazine Capacity – Comes with a standard-capacity magazine. Why it matters: More rounds on tap means less reloading during a hunt or a training session.
Who It’s For
This rifle is for the hunter who wants a .300 Blackout without the premium price tag. It’s also for the shooter who needs a reliable, everyday carbine for plinking, home defense, or hog control. If you’re looking for a no-frills AR-style platform that works with both supersonic and subsonic ammo, the Alpha Maxx fits the bill.
Pros and Cons
- Pro: Affordable price point – under $400 for a complete .300 Blackout rifle is rare.
- Pro: M-LOK handguard offers solid accessory mounting options.
- Pro: Threaded barrel ready for suppressors.
- Con: The polymer handguard can feel less rigid than aluminum rails under heavy load or heat. According to ATI specs, it’s designed for standard use, not extended rapid fire.
Comparison: Alpha Maxx vs. PSA PA-15 vs. Ruger AR-556
| Feature | American Tactical Alpha Maxx | PSA PA-15 .300 Blackout | Ruger AR-556 .300 Blackout |
|---|---|---|---|
| Price | $380.44 | ~$500 | ~$750 |
| Barrel Length | 16 inches, threaded | 16 inches, threaded | 16 inches, threaded |
| Handguard | 9-inch polymer M-LOK | 15-inch aluminum M-LOK | 15-inch aluminum M-LOK |
| Stock | ATI MM4 synthetic | Magpul MOE | Ruger synthetic |
| Weight | ~6.5 lbs | ~6.8 lbs | ~7.0 lbs |
| Best For | Budget builds, hunting | Mid-range customizing | Premium out-of-box |
Frequently Asked Questions
No specific buyer questions were provided for this product, but here are common inquiries for this rifle type.
Can this rifle handle subsonic .300 Blackout ammunition?
Yes, the 16-inch barrel and gas system are designed to cycle both supersonic and subsonic loads reliably. For suppressed use, subsonic rounds will function well.
Is the handguard compatible with standard M-LOK accessories?
Yes, the 9-inch polymer handguard uses the M-LOK system, so you can attach grips, lights, and bipods from any M-LOK-compatible manufacturer.
Does the rifle come with a magazine?
Yes, it ships with one 30-round magazine. Capacity may vary by state due to local laws.
What is the twist rate of the barrel?
Per American Tactical specs, the barrel has a 1:8 twist rate, which stabilizes both 110-grain supersonic and 220-grain subsonic loads well.
Can I mount a scope without removing the rear sight?
The flip-up rear sight can be folded down, so a low-profile scope mount or red dot can be used without interference. You may need a riser for co-witness.
Why Buy From Us
We ship to all 50 states. Your order leaves our warehouse within 1-2 business days. If you’re not satisfied, we accept returns within 30 days. Your transaction is protected with secure checkout. Plus, we back every rifle with honest, hands-on support from shooters who know the gear.
Last updated: April 2026
Explore more: Semi Auto Rifles | .300 Blackout Rifles | American Tactical
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