Dirty Bird DB9 9mm Billet Lower Receiver

The DB9 Billet Lower Receiver is an ideal choice for starting your pistol caliber (9mm, 40 S&W, .357 Sig) AR build. Precision machined from a solid block of 7075-T6 billet aluminum and finished with hard-coat black anodizing per Mil 8625 Type 3 Class 2 specifications, you can be sure that this unit is as tough as they come.

This lower receiver accepts any Glock style small frame pistol caliber magazines in 9mm, .40 S&W, .357 SIG, etc. and the mag well features a beveled feed lip for quick and easy mag swaps. Extensive testing and attention to detail also ensure that your Glock style magazines will drop free when released. The proprietary magazine catch and ejector is included and pre-installed from the factory.

• Dedicated 9mm Platform: Engineered exclusively for 9mm builds using Glock®-pattern magazines.
• LRBHO System: Features a reliable last round bolt hold open (LRBHO) mechanism for faster and more efficient reloads.
• Ready for Customization: Ships stripped, including proprietary magazine and bolt release controls pre-installed, so you can add your preferred grip, trigger, and buffer system.
• Enhanced Ergonomics: Includes an integral trigger guard and a flared magwell tailored to Glock® mags for intuitive reloads and a sleek profile.
• Premium Build Quality: CNC-machined from billet 7075-T6 aluminum and finished with a Mil-Spec hardcoat anodize for maximum durability and corrosion resistance.
• Made in the USA: Manufactured to the highest standards with a lifetime warranty on materials and workmanship.

• Machined from billet 7075-T6 aluminum
• Compatible with Glock®-style 9mm magazines
• Last round bolt hold open feature
• Nylon upper/lower tensioning screw
• Integrates seamlessly with Mil-Spec AR-15 small parts
• Proprietary mag release and bolt catch pre-installed
• Lifetime warranty