Aero Precision X15 AR-15 Gen 2 Stripped Lower Receiver with Trigger Guard

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This item is regulated, therefore your entire order will be shipped to an FFL dealer of your choosing. After you place your order, we will contact you to finalize these details.

Orders will Ship within 1 Business Day

AT3™ Upper Receiver and SPEAR Handguard Combo - Burnt Bronze, 12 inch


Improved Aero Precision Lower with Billet Trigger Guard

The Aero Precision X15 Gen 2 is the stripped AR-15 lower of choice for many shooters across the nation. With improvements for ease of installation, plus functional upgrades like a flared magwell, this upper is a cut above its competition, especially for beginners. These lowers include a unique Cerakote finish in OD Green, Burnt Bronze, or Sniper Grey, and are paired with an easy-to-install winter trigger guard in matching color.

Match this lower with a Burnt Bronze upper combo kit from AT3!

Gen 2 Improvements

  • Upper Tension Screw – Allows users to fine-tune the fit of the upper and lower receiver through the use of a nylon tipped tensioning set screw inserted in the grip tang of the lower receiver. This provides a tight fit with any standard AR15 upper receiver.
  • Increased Magwell Flare – Allows for easier insertion of magazines and provides a sleeker look.


  • Stripped AR15 Lower Receiver, Gen 2
  • Nylon tipped tensioning set screw


  • Shipping to FFL Dealer Required: Yes
  • Platform: AR15
  • Material: Machined from 7075-T6 forged aluminum
  • Finish: OD Cerakote H-232Q, Burnt Bronze Cerakote H-148, Sniper Grey Cerakote H-234
  • Markings: “Cal Multi”
  • Compatibility: Works with standard AR15 components and magazines
  • Weight: 8.35oz

NOTE: Rear takedown pin detent hole is threaded for a 4-40 set screw

Have Questions About this Product?

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

Aero Precision Warranty

If for any reason you have a warranty issue with one of our products, please contact us at 253-272-8188.

Please describe your situation, include your name and order number or transaction id. One of our technical specialists will then review your claim and contact you within 3-5 business days.

If you have images to send, please email them to

Damaged Items

In regards to claims dealing with damaged or blemished products, we ask that you create a Help Desk Ticket on your My Account page. If you don’t have an account with us, please go to the Contact Us page and fill out the form for review within 72 hours upon receiving the shipment.

If you have images to send, please email them to

Failed Background Check

There will be a 30% restocking fee on all lower receivers returned because of failed background checks.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.