The Luth-AR .308 Lower Parts Kit (brand part no. LRPK-308) is a complete lower parts kit sized specifically to .308-caliber AR-10/LR-308-pattern lower receivers. Luth-AR builds this kit to supply everything needed to finish a .308 AR lower, including the trigger group, pins, springs, detents, selector, magazine catch, bolt catch, trigger guard, and pistol grip, all sized to the large-frame .308/AR-10 pattern rather than the smaller AR-15 5.56 lower. It’s a straightforward, single-source way to round out a .308 AR lower build without hunting down individual parts from multiple vendors.

Key Specifications

• Sized specifically for .308-caliber AR-10/LR-308-pattern lowers.
• Ships as a complete lower parts kit, not a partial kit.
• Supplies the trigger group needed to finish the lower, including hammer, trigger, and disconnector.
• Includes the full set of pins, springs, and detents required for assembly.
• Includes a selector/safety to complete the lower’s fire control.
• Includes a magazine catch assembly sized to the .308/AR-10 large-frame magazine well.
• Includes a bolt catch assembly built for the .308/AR-10 platform.
• Includes a trigger guard and pistol grip to finish the lower’s furniture.
• Built to the large-frame .308/AR-10 lower pattern, distinct from the smaller AR-15 lower.

Frequently Asked Questions

Will this fit a standard AR-15 lower? No, it’s sized to the large-frame .308/AR-10-pattern lower, not the smaller AR-15 5.56 lower.

Is this a complete kit? Yes, it’s built as a complete lower parts kit to finish a .308 AR-10/LR-308 lower build.

Does it include a trigger guard and grip? Yes, both are included along with the full trigger group, pins, springs, and detents.

Buy the Luth-AR .308 Lower Parts Kit

Round out your .308 AR-10/LR-308 lower build in one order. Order it from our Luth-AR lineup, part of our AR lower parts kits selection, at our Lubbock, Texas gun shop for fast, direct shipping.