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 anodizing
Maximum Compatibility
- “Multi-Cal” markings for compatibility with many different caliber uppers
- Machined to Mil-Spec dimensions
- Compatible with all standard AR-15 components and magazines
Premium Parts Kit Installed
- Mil-spec Lower Parts Kit w/ machined components (not MIM)
- Dirty Bird Ambidextrous Safety Selector
- Enhanced Fire Control Group (FCG) w/ flat trigger & 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)
- H2 carbine recoil buffer w/ steel counter weights
- Sprinco “Blue” buffer spring
- Mil-spec castle nut & end plate
- B5 Systems P-23 pistol grip
- B5 Systems BRAVO mil-spec stock
American Made
Dirty Bird Industries’ Limited Lifetime Warranty
