Black Rain Ordnance BROMLRBLK Lower Receiver Milled 7075-T6 Aluminum Black Anodized for AR-Platform

The Black Rain Ordnance BROMLRBLK Lower Receiver Milled 7075-T6 Aluminum Black Anodized for AR-Platform is a precision-machined fire control group housing designed for tactical shooters, gunsmiths, and military/law enforcement professionals who demand uncompromising durability and accuracy. As the serialized foundation of any AR-pattern rifle, a high-quality lower receiver is non-negotiable—it's where reliability starts and where your build's structural integrity is established. Black Rain Ordnance has earned respect across professional shooting communities for delivering receivers that survive extended duty cycles without performance degradation.

This lower receiver is milled from aerospace-grade 7075-T6 aluminum, a material specification that guarantees superior hardness and fatigue resistance compared to standard 6061-T6 forgings used by lesser manufacturers. The T6 heat treatment ensures consistent grain structure, translating to dimensional stability and resistance to deformation under sustained fire or mounting stress. Black anodized Type II/III finish provides corrosion resistance and a professional aesthetics while reducing light reflection—critical for tactical and competitive environments. At 0.8 lbs, the receiver exhibits the weight efficiency expected from precision aluminum work, minimizing system mass without sacrificing structural rigidity or dimensional tolerance.

Law enforcement armorer teams and military gunsmiths will find this lower receiver compatible with all standard AR-platform upper assemblies and components—6.5 Creedmoor, 5.56 NATO, 300 Blackout, and beyond. The precision milling tolerances ensure reliable cycling with mil-spec and commercial buffer tubes, and the anodized finish resists fingerprint corrosion during extended storage or field operations. Installation requires only basic gunsmith tools and familiarity with AR platform assembly; once properly fitted with trigger group, pistol grip, and stock components, this receiver delivers the accuracy foundation that separates match-grade builds from budget platforms. Recommended for patrol rifles, recce builds, precision competition platforms, and professional-grade armorer inventory.