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AR-308 Lower Parts Kit - Complete
AR-308 Lower Parts Kit - Builder
AR-308 Lower Parts Kit - Complete
AR-308 Lower Parts Kit - Builder
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LUTH-AR LLC - AR-308 LOWER PARTS KIT

2 Reviews
Model Number
Brownells #
430107611, 430107612
MFR #
LRPK-308, LRPK-BLDR-308
UPC
812058030089, 812058030270
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Coupon Code
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Estimated delivery: Oct 23
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What is the LUTH-AR LLC - AR-308 LOWER PARTS KIT?
308 LOWER PARTS KITS
No MIM here. Luth-AR produces only the best quality, American made parts for the AR platform. All of the parts included in our lower parts kits are investment cast or otherwise machined to Mil-Spec drawings, materials and heat treat. Springs are a combination of 17-4 SST and various Mil-Spec steel wire are used in all of our springs with certification.
Luth-AR’s .308 AR complete lower parts kit includes everything you need to fully assemble a stripped AR lower receiver. It includes a trigger, hammer, trigger guard, magazine catch, bolt catch, selector switch, and all necessary pins and springs. Made with high-quality materials for durability and longevity.
COMPLETE KIT INCLUDES:
  • LR-01 Buffer Retainer 1-ea.
  • LR-02 Buffer Retainer Spring 1-ea.
  • LR-03 Trigger Guard 1-ea.
  • LR-04 Trigger Guard Pin 1-ea.
  • LR-08 Selector/Safety 1-ea.
  • LR-09 Bolt Catch Spring 1-ea.
  • LR-10 Bolt Catch Buffer (Plunger) 1-ea.
  • 308-LR-11 Bolt Catch 1-ea.
  • 308-LR-12 Bolt Catch Screw 1-ea.
  • LR-13 Magazine catch 1-ea.
  • LR-14 Detent Spring 2-ea.
  • LR-15 Takedown Detent 2-ea.
  • LR-16 Mag Catch/Buttstock Plunger Spring 1-ea.
  • LR-17 Magazine Catch Button, Aluminum 1-ea.
  • 308-LR-18 Front Pivot Pin 1-ea.
  • LR-19 Disconnector, AR15 1-ea.
  • LR-20 Trigger AR15 1-ea.
  • LR-22 Trigger Spring 1-ea.
  • LR-23 Pistol Grip Bolt 1-ea.
  • LR-24 Pistol Grip Lock Washer 1-ea.
  • LR-25 A2 Pistol Grip, Black Plastic 1-ea.
  • LR-26 Selector/Ejector Spring 1-ea.
  • LR-27 Detent (Selector) 1-ea.
  • LR-28 Hammer/Trigger pin 2-ea.
  • 308-LR-30 Pin, Rear Takedown 1-ea.
  • LR-31 Disconnector Spring 1-ea.
  • LR-32 Hammer Spring 1-ea.
  • LR-33K Hammer AR15, w/J Spring 1-ea.
BUILDER KIT INCLUDES:
  • LR-01 Buffer Retainer 1-ea.
  • LR-02 Buffer Retainer Spring 1-ea.
  • LR-08 Selector/Safety 1-ea.
  • LR-09 Bolt Catch Spring 1-ea.
  • LR-10 Bolt Catch Buffer (Plunger) 1-ea.
  • 308-LR-11 Bolt Catch 1-ea.
  • 308-LR-12 Bolt Catch Screw 1-ea.
  • LR-13 Magazine catch 1-ea.
  • LR-14 Detent Spring 2-ea.
  • LR-15 Takedown Detent 2-ea.
  • LR-16 Mag Catch/Buttstock Plunger Spring 1-ea.
  • LR-17 Magazine Catch Button, Aluminum 1-ea.
  • 308-LR-18 Front Pivot Pin 1-ea.
  • LR-26 Selector/Ejector Spring 1-ea.
  • LR-27 Detent (Selector) 1-ea.
  • LR-28 Hammer/Trigger pin 2-ea.
  • 308-LR-30 Pin, Rear Takedown 1-ea.

See all of our AR15s and AR15 parts here.

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AR-308 LOWER PARTS KIT REVIEWS

3.0
2 Reviews
5 Stars
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4 Stars
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1 Stars
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5
LPK
All parts worked well on the APF lower.
Would you recommend this? Yes, I would recommend to a friend
by PAUL M. on October 20, 2025
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1
Luth AR LPK very disappointing
I actually ordered, and received the LPK without the grip and fire control group, that being said, the set i received was the worst LPK set i have ever purchased, for any platform. The key parts, bolt catch , mag release are trash, springs are springs so nothing to say there. I could not use the bolt catch at all malfunctioned every time, the mag release didn't fit. The take down pins were very tight but i managed to get them to fit. I do not recommend.
by ANDY W. on August 24, 2025
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