KAK AR-15 Complete Lower Parts Kit

Manufactured by KAK Industry
SKU: AR15-LP-KT-010
MPN: AR15-LP-KT-010
Manufactured by KAK Industry
27 Reviews
$34.99 $54.99

In Stock

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The KAK Industry AR-15 lower parts kit is a one stop purchase to get everything you need to complete your first or tenth lower receiver. This AR-15 LPK is made up of Mil-Spec components for maximum compatibility with all lower receivers. It not only comes with the small springs, detents, and pins, but also a Mil-Spec trigger group, A2 pistol grip, and a billet machined trigger guard. The trigger guard is enlarged to give you enough room to pull the trigger if you are wearing gloves. This Mil-Spec complete lower parts kit by KAK Industry is an affordable way to complete your build.

This LPK Includes:
  • A2 pistol grip
  • Grip screw and lock washer
  • 90-degree standard safety selector
  • Safety detent and detent spring
  • MIL-SPEC bolt catch
  • Billet trigger guard
  • Bolt catch plunger and roll pin
  • Magazine catch and spring
  • Magazine release button
  • Pivot pin and takedown pin
  • (2) Pivot/Takedown Pin Detents
  • (2) Pivot/Takedown Pin Detent Springs
  • Buffer retaining pin and spring
  • Mil-Spec trigger and hammer
  • Trigger and hammer springs

With a reputation for precision manufacturing, KAK Industry offers quality, American made components at affordable prices. They began as a single shop and grew to a huge manufacturing facility in California where they now produce more than 1.75 million firearms components a year. They have since expanded to even more locations, including testing facilities, so they can ensure that every one of their products meet the demands of shooters, hunters, and businesses everywhere.
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BrandKAK Industry
Fire Control GroupSingle Stage Trigger
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Finished my M16A1 project

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This is a great lower parts kit for the price. Used it to complete my M16A1 build (the A2 style handle just went in my parts bin).

Great kit

by -

Kit was complete and easy to install. The trigger beat my expectations and has a smooth pull and a great break and reset.

Parts are there

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Whenever I’ve ordered from Primary Arms, I’ve gotten all that was advertised at the best price I coukd find. No exception here... And, as usual, parts were fine, and delivered on-time.

Great Parts Kit


I purchased several of these parts kits in late 2018. I have run several thousand rounds through rifles with 2 of those kits. This lower parts kit is every bit or more reliable as other competitors kits. The enhanced trigger guard is nice, but I believe the highlight of this kit is the trigger. I have used many triggers, primarily stock colt triggers with CQB rifles and Geissele SSA, as well as SSA-E, and cheaper triggers from PSA and the like. This Mil Spec trigger has virtually no discernible creep and breaks right at 5 pounds. I rate this trigger among the best single stage triggers in this weight range regardless of price. I cannot recommend this kit enough.

Awesome kit


I've bought a few of these kits and they are awesome. Haven't had any issues yet

Great parts and great company


My LPK came as expected, everything was in spec installed a bit better than the Anderson kits and the trigger spring doesn't seem as strong. I haven't measured the pull but it feels lighter. The trigger guard was a nice surprise I was expecting the traditional flat piece. I have dealt with this company for about 5 years buying barrels, BCG, Buffer kits, etc. well before PA started carrying their stuff, great company!

New Go-To LPK


Took a chance on this based on reviews, but the bad ones are a couple years old and the guy who broke his bolt catch dry firing came in on the short bus. Kit is great. Step above the Anderson kits, super nice billet trigger guard, great FCG. Takedown pins glide and have positive lockup, and safety has perfect tactile feel. I’d buy this again at twice the price.

AR lower parts kit


Thanks PA fast shipping and great price

This is the Jam right here


Best LPK deal by light years. A couple of them were a little difficult getting the trigger pin in but once it’s in there this is the best mil spec trigger I’ve experienced. Seriously beats rhe ALG ACT after a quick shoestring trigger job. The billet trigger guard is great too, safety selector is positive firm and smooth, and the takedown pins are some of the smoothest I’ve used. Have installed 4 of these so far and just ordered a few more. For ~$30 this product can’t be beat.

Disconnector hole is not round

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Terrible quality control. I wish I could post a picture. Deserves to be in SOTARs bin of shame!!

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