Dirty Bird AR-15 Enhanced Lower Parts Kit
Upgrade your AR with confidence using the Dirty Bird AR-15 Enhanced Lower Parts Kit—a premium, American-made LPK featuring precision-machined components and enhanced controls. This complete kit includes Dirty Bird’s popular Nickel Teflon single-stage trigger group with polished engagement surfaces, delivering a crisp 5–5.5 lb break and minimal take-up. Also included: an enhanced polymer trigger guard, reduced power trigger springs for a smoother pull, and an extra set of takedown/pivot pin detents and springs for added reliability. Every part is guaranteed to be in spec and backed by Dirty Bird’s Limited Lifetime Warranty.
Perfect for AR builders who demand performance, consistency, and quality—all in one AR-15 Enhanced Lower Parts Kit.
Don’t settle for out-of-spec or incomplete kits—Dirty Bird guarantees precision, reliability, and exact component fit in every AR-15 Enhanced Lower Parts Kit, which includes:
- Nickel Teflon Trigger Group
- Nickel Teflon Honed and Polished Trigger and Hammer
- Enhanced Disconnector
- Disconnector Spring
- Trigger Spring
- Hammer Spring
- Trigger / Hammer Pins (x2)
- Dirty Bird Industries Reduced Power Trigger Springs
- Has been proven to produce a consistent 3.5 – 4lb trigger pull
- Bolt Catch
- Magazine Catch
- Magazine Catch Button
- Safety Selector
- Enhanced Polymer Trigger Guard (w/ set screw)
- Trigger / Hammer Pins (x2)
- Takedown Pin
- Pivot Pin
- Takedown / Pivot Pin Springs (x3)
- Takedown / Pivot Pin Detents (x3)
- Safety Selector Detent
- Safety Selector Detent Spring
- Magazine Catch Spring
- Trigger Guard Roll Pin
- Bolt Catch Detent
- Bolt Catch Detent Spring
- Bolt Catch Roll Pin
- Buffer Retainer / Detent
- Buffer Retainer / Detent Spring
- A2 Pistol Grip Assembly
Backed by Dirty Bird Industries’ Limited Lifetime Warranty
100% American Made
Dirty Bird Industries — Premium AR-15 and AR-10 Components, Built to Last.
Designed for builders who demand uncompromising quality, reliable performance, and accessible pricing without the premium markups common from larger brands.
Founded by Builders, Built to Last
Founded in 2015 by brothers Jay and Dustin Pitcher in a Bakersfield, California garage, Dirty Bird Industries started as a family-owned operation specializing in custom Cerakote finishes and high-quality AR parts. Building on experience from its sister site, AR15Discounts.com, Dirty Bird Industries has grown into a nationwide company with a dedicated team focused on American-made gear that shooters trust.
American-Made Quality and Precision
Through strategic partnerships with leading domestic manufacturers, Dirty Bird Industries sources and develops components using advanced CNC machining, rigorous testing, and mil-spec standards. By managing larger volumes, the company delivers proven, high-end materials and precision engineering at fair prices that meet the high standards set for its own builds.
Proven Components for Serious Builds
Standout offerings include precision-forged 7075-T6 upper and lower receivers, enhanced black nitride bolt carrier groups, single-stage nickel Teflon triggers, free-float M-LOK handguards, complete upper assemblies, and comprehensive lower parts kits. These products create a cohesive selection for everything from custom builds to high-performance rifles nationwide, supported by batch inspections, mil-spec compliance, and ongoing innovations.
Zero Risk Guarantee Program
For total confidence, Dirty Bird Industries backs eligible parts and accessories with its Zero Risk Guarantee Program. This includes free shipping on orders over $50, package protection up to $5,000, lifetime free returns with full refunds within 45 days or store credit after, and expert support. As passionate shooters, the team at Dirty Bird Industries stands behind every product because the company builds, tests, and uses them too, providing authentic value and dependable gear.




