The Luth-AR AR-15 lower parts kit is a complete set of standard-pattern lower receiver components finished in matte black (Luth-AR part no. LRPK-1). It supplies the springs, pins, safety and fire-control parts a builder needs to finish the lower receiver assembly. Because it follows the common AR-15 pattern, it is a practical starting point for a first build or for refreshing the lower on an existing rifle. Luth-AR packs the fire-control group and the control hardware into one kit, so there is no need to source each small part separately.

Key Specifications

• The kit is made for AR-15 pattern lower receivers, using standard-pattern parts so it works with the common stripped lowers.
• It is a complete lower parts set that covers the springs, pins and control hardware needed to finish a lower receiver assembly.
• The fire-control group includes a hammer with J spring, a trigger and a disconnector, the parts that decide how the rifle breaks and resets.
• Selector and safety parts are part of the kit, so the control group is covered along with the fire controls.
• The magazine catch button is aluminum, a light part that is easy to reach and press.
• The fire-control and structural parts are steel, the usual material for the small parts that take the wear in a lower.
• The components are finished in matte black, which gives the lower a uniform, low-glare look.

Frequently Asked Questions

What does this kit complete? It completes an AR-15 pattern lower receiver. The kit supplies the springs, pins, safety and fire-control components and control hardware for the assembly, and you provide the lower receiver itself.

Which fire-control parts come in the kit? The kit includes a hammer with J spring, a trigger and a disconnector, along with selector and safety parts and an aluminum magazine catch button.

Buy the Luth-AR AR-15 Complete Lower Receiver Parts Kit, Matte Black

Finishing a lower is mostly a matter of having every small part on the bench before you start, and a complete kit takes the guesswork out of that. This matte black set is aimed at builders who want a straightforward standard-pattern lower. Browse more AR lower parts kits from our Lubbock, Texas gun shop, and it ships direct to your door.