Description
The Luth-AR Lower Receiver Parts Builders Kit is a high-quality mil-spec builder kit containing all the essential non-fire-control components needed to complete an AR-15 lower receiver assembly. This kit focuses on the critical pins, springs, detents, catches, and selectors while allowing you to choose your own trigger group. All parts are investment cast or machined to strict mil-spec standards with no MIM components, ensuring reliable function and long-term durability.
Finished with manganese phosphate and other corrosion-resistant coatings, this builder kit is perfect for custom builds, gunsmiths, or anyone wanting flexibility in their AR-15 project.
Features
- Complete AR-15 Builder Lower Parts Kit (no trigger group)
- Includes buffer retainer, bolt catch assembly, magazine catch, safety selector, takedown/pivot pins, and all necessary springs and detents
- Investment cast and machined to mil-spec drawings with proper heat treat
- Manganese phosphate finish on key components for corrosion resistance
- High-quality 17-4 stainless and mil-spec steel springs
- Compatible with all standard AR-15 lower receivers
- Proudly made in the USA by Luth-AR
