Aero Precision Stripped AR-15 Lower Receiver - Gen 2 - Ambi Bolt Release

SKU: APAR501102A
MPN: APAR501102A
Manufactured by Aero Precision
6 Reviews


Out of Stock

NOTE: Limit 1 per household. Quantities exceeding 1 will not allow checkout.


Out of Stock

Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal Firearm License holder.
•Current processing time is approximately 14 to 16 days.
•NJ, NY and CA are not able to accept transfers at this time.
•Please contact your local FFL prior to placing your order to ensure they are still accepting transfers. Due to Covid-19 many are no longer open
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to


The Aero Precision Ambi Gen 2 Stripped Lower Receiver is the foundation of your rifle. Machined to MIL-SPEC ensuring compatibility with a wide range of standard AR-15 components. Increased magwell flare allows easier insertion of magazines and provides a sleeker look. The grip tang has been machined for a nylon tipped upper tensioning screw. This screw allows any slack present when assembled with an upper receiver to be adjusted out for a tight fit. While not required for assembly, the takedown detent hole is threaded for a 4-40 set screw allowing the takedown spring and detent to be installed without a carbine end plate or rifle stock (screw not included).

For a fully ambidextrous build, add your favorite ambi mag release and ambi safety selector.

  • Aero Precision "A" logo with bullet pictogram safety selector markings
  • Factory installed PDQ Ambi-Bolt Release
  • Hardcoat anodized black
  • 7075-T6 forged aluminum
  • Weight: 8.35 oz


BrandAero Precision
Caliber MarkingMulti-Caliber
FinishHardcoat Anodized
ManufacturerAero Precision
Receiver Material7075-T6 Aluminum
Trigger Pin DiameterMIL-SPEC .154
Weight8.35 Oz

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

Ratings & Reviews

6 reviews

  • 4 stars
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  • 2 stars
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Disappointed with out of spec take down holes and poor customer service.

by -

I realize my experience is not typical, but I can only rate on what I personally have experienced. My first impressions of the lower were very good. It looked good and I really liked the ambi bolt release. However, when I went to mate it to an AP Upper, the rear take down pin would not completely go in unless it was hammered. I tried different uppers and different take down pins all with the same result. The take down holes were definitely out of spec. I contacted Aero Precision and they asked that I send them more info and pictures and that they would get back to me. I did as they requested... crickets. I sent a follow up email a week later... still nothing. I got tired of waiting so I just modified my take down pin to make it work. It's not ideal, but it's a solution. My frustration and disappointment are not only with the product itself, but with the lack of customer support as well. Had customer support been more responsive, I would have rated this product higher.
<br>From PA: I'm very sorry to hear that you received a bad lower and that Aero wasn't able to resolve this for you. One of our customer service reps will contact you and we will be happy to assist you.

Great product for a Ambi Lower receiver.


I bought one of these about 6 months ago and paid more than the sale price at PA. This is a great lower receiver matched with the Aero Precision M4E1 upper, it is a must have on any new build. The ambi bolt release with all of the other Gen 2 features makes this Lower Receiver a bargain as well as a great functioning product.

Quality lower!


Recently bought this lower for my AR15 build and couldn't be more pleased with the quality and finish of the metal. Will purchase more when I build another AR.

Awesome Fit


Finish and Features!For the quality and features you cannot beat these lowers!!! I purchased 2 of these for my 4th and 5th AR builds. Comes with the ambi bolt release threaded take down detent hole and a built-in adjustment for tightening-up the fit between upper and lower! And Primary Arms' customer service has been unmatched in the industry! Im definitely buying more Aero Precison products and will continue to do business with Primary Arms!

Excellent product


I've had two of these for 7 months now and they are JUST what I have been missing from an AR-15. The Magpul BAD Lever tried to do this but with all the extra weight I consistently had failure to hold open on the last round. Aero Ambi Lowers are the best!! When I ordered the gen 1 lowers were listed since I ordered two and only one was in stock Primary Arms the magnificent people that they are upgraded me to the gen 2 for the same price. I love Primary!!

Aero Ambi Lowet


Super fast shipping from Primary as always. Ordered on Thursday and arrived at my ffl on Monday. Finish is superb, no marks or scratches upon arrival, really lightweight lower. It's perfect for lefties that want to be able to train off hand and for the fully Ambi build I'm working on.