Dirty Bird AR-15 Multi-Cal Forged Lower Receiver

The Dirty Bird Industries AR-15 Forged Multi-Cal Lower Receiver is a great starting point for your next build.

Start with Quality Forgings

All MCF-A lowers are machined from top-tier 7075 Aluminum Forgings.

Meticulous Machining

We wanted perfection, so we teamed up with the folks at DRG Manufacturing Industries. DRG Manufacturing is one of the industries’ best kept secrets. And while we’d love to keep them all for ourselves, we can’t talk about the quality of this lower without giving huge props to their team. Lots of companies are known for their creative vision, others are known for their unwavering attention to detail. DRG does both, and they do it very, very well.

Made in the USA

Backed by the Dirty Bird Limited Lifetime Warranty

*Black color is type 3 hard anodized per mil-spec. Other colors will be Cerakote.