Dirty Bird AR-15 MCF Complete Lower Receiver - Black

We built the Dirty Bird MCF Complete Lower to be the best AR-15 complete lower for the money.Why trust Dirty Bird Quality components sourced from tier 1 manufacturers. Assembled by competent professionals who take pride in their work.Quality Materials, Durable Finish 7075-T6 Forgings Precision machined on state of the art CNC equipment with quality and tolerance checks throughout the machining process Matte black Mil 8625 Type 3 Class 2 hard-coat anodizingMaximum Compatibility "Multi-Cal" markings for compatibility with many different caliber uppers Machined to Mil-Spec dimensions Compatible with all standard AR-15 components and magazinesPremium Parts Kit Installed Mil-spec Lower Parts Kit w/ machined components (not MIM) Enhanced Fire Control Group (FCG) w/ honed sear engagement surfaces for a smooth pull and clean break Enhanced polymer trigger guard Dirty Bird True Mil-Spec Carbine Buffer Kit 7075-T6 receiver extension (featuring an impossibly smooth ID that minimizes the spring noise) 3oz carbine recoil buffer w/ steel counter weights Chrome silicon buffer spring Mil-spec castle nut & end plate A2 Grip can be easily swapped for grip of your choice Stock not included. Builder is free to choose any stock they likeAmerican MadeDirty Bird Industries' Limited Lifetime Warranty