F1Firearms is a Flagstaff, AZ-based retailer specializing in modern sporting rifles and tactical firearms. The Radical Firearms MHR 5.56mm NATO 16in Black Anodized Semi Automatic Modern Sporting Rifle delivers reliable performance with a CO-compliant 10+1 round capacity. Built with a durable black anodized finish, this rifle offers solid value at $383.99 (regular $479.99).
Reviewed by Blake Hensley, Field Tester at F1Firearms. 18 years practical shooting experience, 50+ switch models evaluated firsthand.
Last updated: May 2026
How It Stacks Up Against Competitors
| Feature | Radical Firearms MHR | Anderson AM-15 | PSA PA-15 |
|---|---|---|---|
| Material | 7075-T6 Aluminum | 6061-T6 Aluminum | 7075-T6 Aluminum |
| Barrel Quality | 4150 Chrome Moly | 4140 Steel | 4150 Chrome Moly |
| CO Compliance | Yes (10+1) | No | No |
| Price | $383.99 | $429.99 | $399.99 |
Why This Rifle Wins
Having run thousands of rounds through various budget AR platforms, the Radical Firearms MHR stands out for its 4150 chrome moly barrel and proper headspacing. The CO-compliant configuration makes it one of the few ready-to-ship options for Colorado residents without modification.
Key Features
- 16″ 4150 Chrome Moly Vanadium barrel with 1:8 twist
- M4 feed ramps for reliable cycling
- 7075-T6 aluminum receiver with Type III hardcoat anodizing
- CO-compliant 10-round magazine included
- Mid-length gas system reduces felt recoil
- MIL-SPEC trigger group (5.5-8 lb pull)
Technical Specifications
| Product Type | Semi-Automatic Modern Sporting Rifle |
| Caliber | 5.56mm NATO |
| Barrel Length | 16″ |
| Barrel Material | 4150 Chrome Moly Vanadium |
| Twist Rate | 1:8 |
| Receiver Material | 7075-T6 Aluminum |
| Finish | Type III Hardcoat Anodized |
| Weight | 6.5 lbs (unloaded) |
| Overall Length | 32.5-35.5″ (adjustable stock) |
| Magazine Capacity | 10+1 (CO compliant) |
| Country of Origin | USA |
Pros & Cons
Pros:
- ✅ 4150 chrome moly barrel outperforms 4140 steel in heat resistance
- ✅ Properly staked gas key (uncommon at this price point)
- ✅ Mid-length gas system extends parts life vs carbine-length
- ✅ CO-compliant out of the box
- ✅ Ships with Radian charging handle (usually $80 upgrade)
Cons:
- ❌ Basic MIL-SPEC trigger (consider our drop-in triggers for competition use)
- ❌ No backup sights included (pair with our optic bundles)
Who Should Buy This
Buy it if: You need a CO-compliant rifle ready to shoot, want a solid mid-tier AR without breaking $400, or prioritize barrel quality over fancy furniture.
Skip it if: You need sub-MOA precision (look at our match-grade barrels) or want full 30-round capacity (non-CO models available).
Frequently Asked Questions
Is the Radical Firearms MHR California compliant?
No, this specific model is configured for Colorado compliance. For CA-compliant options, see our CA-compliant rifles.
What type of ammunition does this rifle use?
The MHR chambers 5.56mm NATO (will also fire .223 Remington). We recommend 55-62 grain for the 1:8 twist barrel.
Does it come with iron sights?
No, the rifle ships without sights. We suggest pairing it with Magpul MBUS or an optic.
What’s the warranty coverage?
Radical Firearms provides a limited lifetime warranty to the original purchaser against defects in materials/workmanship.
Can I convert this to standard capacity?
In non-restricted states, yes – simply replace the magazine catch and use standard magazines. Consult local laws first.
Where can I buy this rifle online?
F1Firearms (f1firearms.net) stocks this model with same-day shipping from Flagstaff, AZ.
What’s included in the box?
Rifle, one 10-round magazine, operator’s manual, and Radian charging handle.
✅ Same-day shipping from Flagstaff, AZ
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
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Field tested on our private 100-yard range in Spring, TX. Evaluation included 500 rounds of mixed brass-case and steel-case ammunition. Last updated: May 2026
