AR15 Standard Lower Parts Kit

Aero Precision AR15 Lower Parts Kit

AR15 Standard Lower Parts Kit Product Sku: APRH100029

Our lower parts kit helps you to build a custom AR15 from the ground up. Mil-spec dimensions and coating ensure the highest quality and correct component interface.


  • Takedown/pivot Spring
  • Takedown/pivot detent
  • Trigger/hammer pin
  • Takedown pin
  • Pivot pin
  • Bolt Catch
  • Bolt Catch Spring
  • Bolt Catch buffer
  • Bolt catch roll pin
  • Safety Selector
  • Safety Selector spring
  • Safety Selector detent
  • Buffer retainer
  • Buffer retainer spring
  • Trigger guard
  • Trigger guard roll pin
  • A2 pistol grip
  • Pistol grip screw
  • Pistol grip lock washer
  • Trigger spring
  • Hammer spring
  • Disconnector spring
  • Magazine catch body
  • Magazine catch spring
  • Magazine catch button
  • Hammer
  • Trigger
  • Disconnector
Made In America? Yes
Finish No
Platform AR15
Manufacturer No
Weight(s) 7.5 oz
Other Features -

Customer Reviews

8 Item(s)

I have a gripe, or 2 Review by Charles
The good: Fit was perfect on an EP Armory polymer lower. The trigger is amazingly crisp and smooth for milspec. Reading other reviews, the trigger is the main reason I bought this LPK, and I was not disappointed. I bought 2 on sale for $48 each, and am very happy I did so, as I'm on a tight budget, experimenting not only with my first build but also milling my own lowers. Luckily these builds are meant to be beater guns, not meant to be pretty, just to have some fun, hiking out into the AZ desert, to do some plinking.
I said, "luckily," because in my one LPKs I used, the Mag catch has some serious blems on about 25% of the surface finish. Looks like it has brown blotchy freckles. "Luckily" this is not meant to be a "pretty" gun. I was just surprise that Aero"precision" let such a blem get thru QC. I was going to give it 4 stars on quality, but I know AP is known for quality, so I let this mistake slide. Packaging was also sloppy, a little surprise to me also.
Another GOOD was free shipping. Over priced shipping charges on a lot of the popular gun sites, is one reason that keeps me from buying from them, so.....Thank you. I look forward to getting a few stripped AeroPrecision lower soon, as well as a complete AR10, when the budget allows. Thanks (Posted on 5/8/2017)
Great for standard Review by Alexander
It's a standard parts kit, mostly like you'd see anywhere else, but the triggers better. There's no creep and its polished. In general it's a top shelf standard parts kit, at a good price, from a great company. (Posted on 7/13/2016)
Great Quality Review by Matt
Works great with my AP lower. The trigger seems pretty solid for mil spec. Would recommend to anyone. (Posted on 7/1/2016)
LPK Review by William
I have 2, both installed in Aero lowers. 1 in particular is in a rifle with a 223 wylde chamber, also Aero. If aftermarket triggers are so great and improve grouping like everyone wants you to believe then with that rifle I should be able to put 5 shot group all inside 1 hole at 100 yards all day long. No creep, clean break. Save the money you would've spent on a drop in aftermarket trigger and take the wife out. If you do that she won't be so mad when you start buying parts for the next build. (Posted on 4/28/2016)
Awesome quality kit Review by Mark
This kit is top shelf. The trigger was polished and has no creep. Very smooth and crisp. The parts all fit and the finish is very high quality.
The only thing was that all the parts are in a bag. Just could be a nice presentation. (Posted on 4/25/2016)
G2G Review by Michael
This is really a nice set, the trigger was polished in my package but with that said the mil-spec trigger in general sucks LOL. The kit is top shelf and will serve you well. (Posted on 2/20/2016)
Bad packaging Review by Juan
Received the lpk in a small bag with all the parts jumbled in together. When I started looking through the bag to check out the parts I heard a clinking sound on the floor - the bag had a hole in the side seam and some of the tiny parts fell out!! I tried to find and pick up the parts with a mechanic's telescoping magnet and found some parts. Not sure if I got all of them since I've been too busy to lay them out and check. Emailed Aero P., and they apologized and said that they would send me any missing parts, if any. I still would buy from them again, I'll just be a little bit careful when taking them out of the shipping bag. Thanks A.P.! No hard feelings!! (Posted on 2/19/2016)
Worked great Review by Curtis
Ordered this LPK to finish my lower build and it worked perfect. Went together as it should and seems high quality. (Posted on 6/17/2015)

8 Item(s)

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