Aero Precision AR-15 Lower Build Kit

SKU# 2157 | by Aero Precision
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Aero Precision Mil-Spec AR-15 Lower Parts Kit

Aero Precision Mil-Spec AR-15 Lower Parts Kit A true, US made mil-spec AR-15 lower parts kit. Made of premium grade materials, complete and ready to install in your AR-15 lower. Compatible with all mil-spec lowers, includes complete fire control group, buffer tube, buffer tube assembly, M4 stock A2 pistol grip and more.

Priced below MSRP, grab a second one for future builds!

Lower Parts Kit Contents

  • Takedown/pivot springs, takedown/pivot detents
  • Trigger/hammer pins
  • 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

Aero Precision Mil-Spec Carbine Buffer / Receiver Extension Kit

Starting with aerospace grade 7075-T6 aluminium, Aero Precision builds the best US made AR-15 buffer tube and buffer kit. Engineered for lifetime performance, there is no finer buffer kit on the market at any price.

  • Mil-Spec 7075-T6 Aluminum Buffer Tube, 6-position
  • Carbine buffer (3oz)
  • Buffer spring
  • End plate and lock nut

M4 Style Adjustable Stock

The same stock used by the US Armed Forces and allied nations, it is battle proven, and ready to install.

About Aero Precision

Born in the heart of Puget Sound's aerospace manufacturing country, and using the same skills needed to make precision aircraft parts, Aero Precision is America's premier manufacturer of AR-15 parts and rifles. 

Customer Reviews

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Zachary S.
United States

Good so far

It was simple to put together, just waiting to get an upper to make it functional.

Jason C.
United States

Glad I found this site!

Got my LPK pretty quick. Great communication about order status. Was a great price and am happy with the purchase overall. Thanks guys!

United States

Aero Precision Lower Build Kit

Everything was excellent dealing with this company. The parts were exactly what I ordered, arrived quickly, and came with great customer service. Will definitely continue to be a customer!

Jeff R.
United States

Fantastic products

I can't say enough good things about the products on my latest build. The guys were always quick and responsive with orders. Will continue buying whatever I need for me y future builds from them.

Jeff R. verified customer review of Aero Precision AR-15 Lower Build Kit
Thomas J.
United States

Good deal

Great price all parts fit well very pleased

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