Luth-AR Lower Parts Kit Builder

Luth-AR LLC, known for the lightest and most affordable adjustable buttstocks, bring you innovative and exciting AR parts and accessories, all made in the U.S.A.

The Luth-AR Lower Receiver Parts AR-15 Builder Kit is a great foundation for your stripped lower receiver. For armorer’s starting a build where a drop-in trigger and custom grip are planned, this kit is the perfect choice. It includes all the required small parts to get your build started, less the custom parts you won’t need from an LPK. This MIL-SPEC kit is compatible with virtually all AR-15 lower receivers on the market.

NOTE: Grip and fire control group are not included.

Kit Includes:

• Buffer retainer
• Buffer retainer spring
• Safety selector
• Selector spring
• Safety detent
• Bolt catch spring
• Bolt catch plunger
• Bolt catch
• Bolt catch roll pin
• Pivot pin
• Takedown pin
• (2) detent springs
• (2) takedown/pivot detents
• Magazine catch
• Mag catch spring
• Aluminum magazine catch button
• (2) hammer/trigger pins