Radical Firearms | 300 AAC Blackout Upper | 10.5″ 1:8 M-LOK

The Radical Firearms 10.5″ HBAR-profile complete upper is built to drop onto any MIL-STD AR lower for a compact, range-capable AR configuration. It ships as a full upper assembly with a 1:8 twist CMV barrel finished with nitride and a 10″ RPR M-LOK handguard. This upper is intended for shooters assembling short-barrel AR projects and for general range training where a compact, controllable rifle is desired.

Product Specifications

• The product type is a Upper complete assembly ready to mount to a MIL-STD lower.
• The subcategory is Complete Upper Receivers for straightforward installation.
• The configuration description lists M-LOK for accessory attachment compatibility.
• The color is Black for a standard, low-visibility finish.
• The caliber is .300 AAC Blackout as specified in the product attributes.
• The barrel twist rate is 1:8 for stabilization of a range of bullet weights.
• The barrel length measures 10.5 inches consistent with a short-barrel upper.
• The barrel material is listed as CMV in the manufacturer description.
• The surface treatment is a Nitride finish for increased surface hardness and corrosion resistance.
• The handguard is a 10″ RPR M-LOK free-float rail for accessory mounting and improved accuracy potential.
• The barrel contour is specified as HBAR for added rigidity.
• The muzzle device is an A2 flash hider according to the product description.
• The assembly includes a complete upper assembly intended for drop-in compatibility with MIL-STD lowers.
• The manufacturer is Radical Firearms as listed in the product data.
• The UPC is 816903024094 for product identification.

This Radical Firearms complete upper brings together a stout HBAR contour barrel, a corrosion-resistant nitride finish, and a modular 10″ RPR M-LOK handguard to create a compact, capable upper for short-barrel AR builds and range-focused use. Its combination of components suits shooters who want a reliable, factory-configured upper that minimizes parts sourcing and delivers consistent performance.