Griffin Armament MK2AL MK2 Stripped Lower Receiver 7075-T6 Aluminum Black Anodized for AR-15

The Griffin Armament MK2AL MK2 Stripped Lower Receiver in 7075-T6 aluminum is the foundation for building a precision AR-15 platform from the ground up. Designed for shooters and builders who demand uncompromising quality, this stripped lower serves as the regulated firearm component that transforms your custom build into a fully functional rifle. Whether you're assembling a duty-grade carbine, precision rifle, or specialized tactical platform, this lower receiver is engineered to accept any mil-spec upper assembly and fire control group.

Machined from 7075-T6 aluminum—a premium aerospace-grade alloy—this lower receiver delivers superior strength-to-weight ratio and dimensional stability across thousands of rounds. The 7075-T6 specification means the aluminum has been heat-treated to peak hardness, resisting wear at critical bearing surfaces where the trigger group and bolt carrier ride. Black anodized hard-coat finish provides corrosion resistance and a professional appearance while protecting the aluminum from oxidation in field conditions. At 0.86 lbs, the MK2AL keeps overall rifle weight minimal without sacrificing structural integrity, critical for tactical applications and extended carry operations.

Law enforcement and military end-users benefit from the MK2AL's repeatable dimensions and tight tolerances, which ensure reliable function across combat-proven upper assemblies and fire control systems. Installation requires only standard AR-15 tools and basic gunsmithing knowledge—the stripped configuration allows full customization of trigger, hammer, and safety selectors to match mission requirements. This lower is compatible with any AR-15 style upper receiver, magazine well configuration, and buffer system, making it ideal for modular builds where component flexibility is essential. Verify local and state regulations regarding FFL transfer and registration before purchase.