Radical Firearms RF-15 .300 Blackout 8.5″ Pistol 30rd
Pros & cons
What works
- Forged 7075-T6 receivers with Type III anodizing — 20% harder surface than standard Type II
- 12.5-inch overall length fits in a 24-inch case — 7.5 inches shorter than a 16-inch carbine
- 5.7 lb empty weight saves 1.2 lb over a comparable 10.5-inch pistol build
- Pistol-length gas system tuned for subs — cycles 220-grain ammunition at 1050 fps reliably
Trade-offs
- MIL-SPEC trigger pull measures 7.5 lb — requires $80-120 upgrade for precision work
- No ambidextrous safety — left-handed shooters add a $45 Talon or Radian lever
- Handguard inner diameter is 1.3 inches — limits suppressor diameter without extension
- HBAR barrel profile adds 4.2 oz versus a pencil barrel — reduces front-end agility
Video review
Expert review
Specs at a glance
About this product
The Radical Firearms RF-15 .300 Blackout 8.5″ Pistol is an AR-platform pistol configured around a short-barrel 8.5″ HBAR barrel and a free-float 7″ M-LOK handguard, designed for compact .300 Blackout applications. This platform uses forged 7075-T6 receivers with Type III hardcoat anodizing and MIL-STD fire control parts for durability in a package that maintains a 12.5″ overall length from endplate to muzzle threads. It arrives configured with a pistol brace interface, though buyers should note that ATF Final Rule 2021R-08F classification requires careful consideration before attaching any stabilizing device.
What is the Radical Firearms RF-15 .300 Blackout Pistol used for?
This pistol is engineered for short-range defensive and suppressor-optimized shooting where compact size and terminal ballistics are prioritized. The 8.5″ barrel stabilizes supersonic .300 Blackout rounds effectively out to 200 yards while being purpose-built for subsonic ammunition when suppressed, creating a package that fits in a 24-inch rifle case. It's not a precision long-range platform—the ballistic drop with 220-grain subs past 150 yards makes that impractical—but it excels in vehicle or structure-adjacent roles where its 5.7 lb unloaded weight and abbreviated profile matter.
How does the Radical Firearms RF-15 compare to the Stevens 334 rifle?
The RF-15 pistol delivers rapid, semi-automatic fire from a 30-round magazine in a package 40% shorter than a typical carbine, whereas the Stevens 334 Rifle in .308 Win offers bolt-action precision at distances exceeding 500 yards with significantly heavier ammunition. For defensive or tactical scenarios under 200 yards requiring high volume and fast follow-up shots, the RF-15 is superior; for hunting medium game or requiring sub-MOA accuracy at range, the Stevens 334 is the clear choice—see our evaluation of the Stevens 334 .308 Win for that use case.
What does it weigh and what are the dimensions?
The RF-15 pistol weighs 5.7 pounds empty, measures 12.5 inches in overall length from receiver endplate to muzzle threads, and extends to 24.8 inches with a maximally extended brace. The 7-inch handguard provides 35% less accessory real estate than a 10-inch rail, but still accommodates a suppressor, light, and handstop within its 6.2-inch usable top rail section. Compared to a 16-inch carbine, you’re saving 7.5 inches of length and roughly 1.2 pounds of weight, largely from the barrel and gas system reduction.
Who is this NOT for?
This pistol is not for first-time AR buyers unfamiliar with NFA regulations regarding pistol braces and short-barreled rifles, nor is it suitable for hunters needing ethical energy beyond 150 yards with subs. If your primary use involves unsuppressed supersonic ammunition, the 8.5-inch barrel sacrifices approximately 12% muzzle velocity compared to a 10.5-inch barrel, making a longer pistol or registered SBR a better ballistic choice. It’s also a poor fit for shooters who prioritize minimalist weight—some dedicated .300 Blackout pistols shave another 8-10 ounces via skeletonization and carbon fiber handguards.
What’s in the box?
You receive the complete pistol with one empty 30-round Aluminum magazine, a slim-line M-LOK handstop section, and the necessary paperwork including an ATF-compliant pistol classification letter. Radical Firearms does not include iron sights, optics, or a sling—budget another $150-$400 for those essentials. The packaging itself is a single-layer cardboard box with foam inserts, adequate for shipping but not for long-term storage; plan on a 12.5x9x3 inch hard case for transport.
Is the Radical Firearms RF-15 worth it at $632?
At $632, this pistol represents a 25% cost savings over comparable custom-built .300 Blackout pistols while delivering forged receiver durability and a functional M-LOK platform. Where it falls short is in trigger quality—the included MIL-SPEC unit has a 7.5-pound pull weight—and the lack of an ambidextrous safety, which adds $45-75 aftermarket. If your budget allows only for the base firearm and ammunition, it’s a solid entry; if you can stretch to $800, builds with upgraded triggers and nickel-boron bolt carriers become attainable.
Key attributes
| upc | 816903022502 |
| manufacturer | Radical Firearms |
| manufacturer part number | FP8.5-300HBAR-7RPR |
| action | Semi-Auto |
| barrel length | 8.5" |
| caliber/gauge | .300 AAC Blackout |
| capacity | 30 |
| color | Black |
| model | RF-15 |
| number of magazines | 1 |
| product type | Pistol |
| shipping weight | 8.0 |
| sights type | NONE |
Frequently asked questions
- Does this work with a suppressor?
- Yes, the 8.5-inch barrel has 5/8x24 threads compatible with most .30-caliber suppressors. You'll need a muzzle device or direct-thread adapter—plan for at least a 0.75-inch clearance behind the handguard for mounting. With subsonic ammunition, expect sound reduction to approximately 132 dB with a quality suppressor.
- Is it compatible with standard AR-15 parts?
- The upper and lower receivers use mil-spec dimensions, so most AR-15 triggers, grips, and bolt carrier groups drop in. The pistol-length gas system and .300 Blackout chambering require a specific bolt and barrel extension, but the included bolt carrier group is already configured. Handguard compatibility is limited to rails with an inner diameter over 1.3 inches to clear a suppressor.
- How long does shipping take to an FFL?
- Ironclad Armory processes orders within 2 business days and ships via UPS Ground, with transit times of 3-7 business days depending on destination. The firearm must ship to a licensed dealer—ensure your chosen FFL has emailed their license to [email protected] before ordering. We do not ship to California, New York, or Washington D.C.
- Can I return it if there's a malfunction?
- Radical Firearms covers manufacturing defects with a 1-year limited warranty—contact their Texas facility for an RMA within 30 days of purchase. Ironclad Armory does not accept returns on firearms after transfer, but will facilitate warranty claims and cover shipping for repairs. Test-fire at least 60 rounds to verify function before modifying anything.