Radical Firearms RF-15 RPR 5.56 NATO 7.5″ 30+1 Pistol Black

Description

The Radical Firearms RF-15 RPR 5.56 NATO 7.5″ 30+1 Pistol Black is a compact AR-style pistol built on forged mil-spec upper and lower receivers, chambered for .223 Rem/5.56 NATO. It features a 7.5″ 4140 chrome-moly-vanadium barrel finished in Melonite, a 7″ free-float RPR M-LOK handguard with a top Picatinny rail, and a pistol buffer tube configuration. This model ships with a 30-round magazine and is configured for semi-automatic operation.

Manufacturer	Radical Firearms
Model	RF-15 RPR
Material	Forged 7075-T6 aluminum receivers; 4140 chrome-moly-vanadium barrel
Compatibility	.223 Rem / 5.56 NATO ammunition; standard AR-15 magazines
Finish	Black anodized receivers; Melonite barrel finish
Weight	Approximately 4.8 lbs (per manufacturer specs)
Condition	New

Key Features

• Forged Mil-Spec Receivers — Built from 7075-T6 aluminum, these receivers meet or exceed military specifications for strength and durability, ensuring the pistol handles thousands of rounds without loosening or cracking.
• 7.5″ Melonite Barrel — The 4140 chrome-moly-vanadium steel barrel is treated with Melonite, a salt-bath nitriding process that hardens the surface and resists corrosion, extending barrel life and maintaining accuracy even in wet conditions.
• 7″ Free-Float RPR M-LOK Handguard — The free-float design prevents barrel contact, improving accuracy by eliminating pressure points. M-LOK slots allow you to mount lights, lasers, or grips without extra weight.
• Pistol Buffer Tube Configuration — This setup keeps the overall length compact for easy handling in tight spaces, while still cycling reliably with standard AR-15 buffer components.
• 30-Round Magazine Included — Ships with a standard-capacity magazine, saving you an extra purchase and getting you to the range faster.

Who It’s For

This pistol is built for the shooter who needs a compact, reliable platform for home defense, truck gun, or close-quarters training. It suits traditional shooters who value forged mil-spec construction over billet or polymer, and who want a ready-to-run pistol without aftermarket upgrades. If you appreciate Melonite finishes and free-float handguards for their longevity and accuracy, this RF-15 RPR fits your bench.

Pros & Cons

• Pros: Forged mil-spec receivers for strength; Melonite barrel for corrosion resistance; free-float M-LOK handguard for accessory mounting; compact 7.5″ barrel for maneuverability; includes 30-round magazine.
• Cons: The 7.5″ barrel produces significant muzzle blast and flash, which may be uncomfortable for new shooters in indoor ranges without a muzzle device upgrade.

Comparison

Feature	Radical Firearms RF-15 RPR	Zev Technologies OZ9C	Agency Arms G19
Caliber	.223 Rem / 5.56 NATO	9mm	9mm
Barrel Length	7.5″	4.17″	4.02″
Receiver Material	Forged 7075-T6 aluminum	Billet 7075-T6 aluminum	Polymer frame with steel slide
Handguard	7″ Free-float M-LOK	N/A (pistol slide)	N/A (pistol slide)
Finish	Black anodized / Melonite	Black anodized	Cerakote
Price	$496.33	$1,200+	$1,500+

FAQ

What is the barrel twist rate on the Radical Firearms RF-15 RPR?

The barrel has a standard 1:7 twist rate, stabilizing bullets from 55 to 77 grains for good accuracy with most .223/5.56 loads.

Can I attach a suppressor to this pistol?

Yes, the barrel is threaded 1/2×28, so you can add a suppressor or muzzle brake. Note that the short barrel increases back pressure, so check your suppressor’s warranty for pistol-length barrels.

Does this pistol come with a brace?

No, it ships with a pistol buffer tube only. You can add an aftermarket arm brace if desired, but ensure it complies with current ATF regulations.

What is the overall length of the RF-15 RPR?

Overall length is approximately 22 inches with the pistol buffer tube, making it compact for storage or vehicle use.

Is this pistol California compliant?

No, this model is not California compliant due to its standard-capacity magazine and features. Check your local laws before ordering.

Browse more options in our AR Pistols collection or see our Radical Firearms lineup. For budget builds, check Complete Uppers.

Last updated: April 2026