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AR-15 Lower Parts Kit

AR-15 Lower Parts Kit

Luth-AR · Lower Parts

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Best price

$55.92at Brownells

In stock checked Oct 21, 2026

Buy at Brownells

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Where to buy

StorePriceAvailabilityBuyAdd to build
Brownells Best price $55.92checked Oct 21, 2026 In stock Buy at Brownells
OpticsPlanet $65.99Salechecked Oct 21, 2026 In stock Buy at OpticsPlanet
Battlehawk Armory $54.06Salechecked Oct 16, 2026 Check store Buy at Battlehawk Armory
Palmetto State Armory $68.99checked Oct 15, 2026 Check store Buy at Palmetto State Armory

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

Price history

Lowest in-stock price in the last 30 days: $55.92 at Brownells. Dashed line = out of stock. Tracking since Sep 27, 2026.

Show the prices as a table
StoreLatestLowestHighest
Battlehawk Armory—$54.06$54.06
Brownells$55.92$55.92$55.92
OpticsPlanet$65.99$65.99$65.99
Palmetto State Armory—$68.99$68.99

Since Sep 27, 2026.

About this part

The AR-15 Lower Parts Kit is an AR-15 lower part from Luth-AR. It's sold by 4 stores (2 in stock), from $54.06 to $68.99. The lowest in-stock price in the last 30 days was $55.92 at Brownells.

Specifications

Manufacturer
Luth-AR
Platform
AR-15

From the manufacturer

ALL the Parts & Pieces You Need To Take a Lower from "Stripped" to "Complete"

The LLRPK-1 AR-15 Lower Receiver Parts Kit from Luth-AR contains all the parts, down to the last spring and pin, to turn a stripped lower into a complete receiver ready for the buffer tube, buffer system and stock of your choice. Sure, we sell all of these parts separately, and Luth-AR has made a big name for itself in the last few years as a supplier of top-quality AR-15 accessories AND basic mil-spec parts. But why chase down all of these mil-spec commodity parts separately when this parts kit provide easy, "one and done" ordering?

This parts kit includes complete, mil-spec AR-15 fire control components - trigger, hammer, disconnector, and all the pins-n-springs. Just note that it’s not a drop-in module, so you will have to assemble the parts. If you’ve done it before, no problem. If you haven’t, watch this video <link: https://www.brownells.com/aspx/learn/learndetail.aspx?lid=11634 > a few times before tackling it.

Here are the complete contents of the LLRPK-1 lower receiver parts kit:

  • Buffer Retainer & Buffer Retainer Spring
  • Triggerguard & pin
  • Safety selector lever + detent
  • Selector/Ejector spring
  • Bolt Catch + spring, plunger & roll pin
  • Magazine catch
  • Magazine release button (aluminum)
  • Front pivot pin
  • Rear takedown pin
  • 2x Takedown/pivot pin detents
  • 2x Detent springs
  • Trigger
  • Trigger spring
  • Hammer, mil-spec w/J spring
  • Hammer spring
  • 2x hammer/trigger pin
  • Disconnector
  • Disconnector spring
  • Mag Catch/Buttstock Plunger Spring 1-ea.
  • A2 pistol grip (black plastic)
  • Pistol grip bolt (slot-head)
  • Pistol grip lock washer

The Luth-AR folks also thoughtfully includes a standard A2-type plastic pistol grip that’ll get you up and shooting until you decide if you want a fancier, aftermarket grip. A lot of AR-15 shooters have spent their entire careers using the A2 grip, but if you want to upgrade, Brownells offers a LOT of options.

Get the Luth-AR LLRPK-1 lower receiver parts kit, and you’ll be sure that when you sit down at your workbench to assemble your next AR-15, completion your project won’t be held up for lack of one or two small parts!

 

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$55.92 at Brownells
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