Description
Radical Firearms 10.5″ M4 Profile AR-15 SBR– 5.56 NATO with 10″ RPR Free-Float Rail
Radical Firearms 10.5 5.56 AR SBR delivers compact 5.56 NATO performance in a rugged MIL-STD platform built for reliability and control. Featuring a 10″ RPR free-float rail system and lightweight M4 profile barrel, this configuration enhances accuracy while maintaining cooler handling and accessory flexibility.
Engineered with forged 7075-T6 receivers and a carbine-length gas system, this AR SBR balances durability, smooth cycling, and dependable performance in a maneuverable format.
Radical Firearms 10.5 5.56 AR SBR Features
- 5″ M4 Profile Barrel – Lightweight contour supports fast handling while maintaining dependable durability
- 56 NATO Chamber – Proven caliber offering broad ammunition compatibility and consistent performance
- 10″ RPR Free-Float Rail – Improves precision and provides extended M-LOK mounting space for optics and accessories
- 1:7 Twist Rate – Stabilizes a wide range of bullet weights for enhanced versatility
- Melanite Barrel Finish – Adds corrosion resistance and long-term wear protection
- Carbine-Length Gas System – Promotes reliable cycling with balanced recoil impulse
- Forged 7075-T6 Upper and Lower – Ensures structural integrity and extended service life
- M4 Feed Ramp Extension – Enhances feeding reliability during rapid operation
- A2 Flash Hider – Helps reduce visible muzzle flash in low-light conditions
Advantages (Ergonomics / Performance / Control)
The 10.5-inch M4 profile barrel keeps overall weight manageable, making the platform responsive and easy to maneuver. Paired with a carbine-length gas system, it delivers dependable operation and controlled recoil.
The 10″ RPR rail system free floats the barrel to help preserve accuracy while offering generous M-LOK space for accessories. Its slim design enhances grip comfort and modular customization.
Forged receivers and MIL-STD components reinforce durability, supporting consistent performance for range training or compact defensive setups.
Ideal Applications
- Range training and drills
- Compact defensive configurations
- Vehicle or truck storage builds
- Accessory-driven M-LOK setups
- Shooters seeking 5.56 performance in a maneuverable AR SBR
Built for shooters who want compact capability without compromising reliability, this 10.5-inch platform delivers modular flexibility and proven 5.56 performance in a refined AR-15 SBR configuration.
