Radical Firearms RPR CA Compliant 5.56 NATO 16" Rifle M-LOK

The Radical Firearms FR16556SOC15RPRCAB5 RPR delivers California-compliant AR-15 performance with a melonite-treated barrel and extensive M-LOK mounting options. This rifle combines precision manufacturing with tactical versatility for competitive shooting and sporting applications.

What Makes This Different

The melonite steel barrel treatment provides superior corrosion resistance and surface hardness compared to standard phosphate coatings. The 15-inch M-LOK handguard extends nearly to the muzzle, offering maximum accessory mounting real estate while maintaining a lightweight profile. California compliance features ensure legal ownership without sacrificing operational capability.

Key Features

• 16-inch melonite-treated steel barrel with 1:7 twist rate for heavy bullet stabilization
• 15-inch M-LOK compatible handguard with continuous top rail
• Black anodized aluminum upper and lower receivers with Picatinny rail
• Threaded muzzle (1/2x28 TPI) ready for muzzle devices
• California compliant configuration meets state regulations
• Standard AR-15 magazine compatibility and parts interchangeability
• Carbine-length gas system for reliable cycling

The melonite barrel treatment extends barrel life significantly beyond standard chrome-lined barrels while maintaining accuracy potential. The extended handguard accommodates bipods, lights, lasers, and grips at multiple positions. Competitive shooters benefit from the rigid platform and consistent lockup, while the threaded barrel accepts compensators and flash hiders.

Technical Specs

• Caliber: 5.56 NATO/.223 Remington
• Barrel Length: 16 inches
• Twist Rate: 1:7 inches
• Handguard: 15-inch M-LOK
• Gas System: Carbine length
• Receiver Material: 7075-T6 aluminum
• Barrel Treatment: Melonite QPQ finish
• Thread Pitch: 1/2x28 TPI
• Overall Length: Approximately 36 inches
• Weight: Approximately 6.5 pounds

Radical Firearms builds this rifle to mil-spec tolerances with quality components throughout. The combination of proven ergonomics, reliable function, and California compliance makes this an intelligent choice for restricted-state shooters seeking AR-15 capability.