Armaspec AR-15 Superlight Lower Parts Kit – ARM252

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AT3 Tactical FU-BAG Lost Parts Kit - Because Oops Happens

AT3™ FU-BAG™ AR-15 Lost Parts Kit – Springs, Detents, Replacement Components


Reliable & High-Quality Components For Your Lower Receiver

The Armaspec AR-15 Superlight Lower Parts Kit was developed to further customize and improve the performance of your AR-15 build. It utilizes and provides some of the most reliable materials that will provide you with numerous years of well-performing and effective parts to keep your rifle on its best performance.

The Armaspec AR-15 Superlight Lower Parts Kit is among one of the best quality AR15 Lower Parts to prolong the efficiency of your rifle and serves as a good replacement or upgrade if your current lower receiver parts have come to fail or weakens.

These high-quality components and precise manufacturing Lower Receiver parts from Armaspec is ideal for maintaining and upgrading your firearms due to its proven durability, reliability, and excellent build quality that will ensure years of service you can count on.


  • Includes Armaspec Enhanced Lower Parts
  • Compatible with most AR-15 lowers
  • Made in the U.S.A.
  • Lifetime warranty


  • 1x Armaspec SFT 45/90 Safety Selector
  • 1x Bolt Catch
  • 1x Armaspec Superlight Enhanced Takedown Pin
  • 1x Stainless Steel Takedown detent
  • 1x Takedown Detent Spring
  • 1x Armaspec Enhanced Pivot Pin
  • 1x Stainless Steel Pivot Detent
  • 1x Pivot Detent Spring
  • 1x Stainless Steel Buffer Retainer
  • 1x Magazine Catch
  • 1x Magazine Spring
  • 1x Armaspec Enhanced Magazine Release Button
  • 1x Stainless Steel Bolt Catch Detent
  • 1x Stainless Steel Safety Selector Detent
  • 1x Bolt Catch Roll Pin
  • 1x Bolt Catch Spring
  • 1x Buffer Retainer Spring
  • 1x Selector Detent Spring
  • 1x Armaspec Enhanced Trigger Guard
  • 1x Trigger Guard Roll Pin
  • 1x Trigger Guard Set Screw
  • 1x Grip Lock Washer
  • 1x Grip Screw

Note: This is “NOT” a complete lower parts kit. This is a LPK without FCG and Grip. This Kit does not include the Pistol Grip, Trigger and Hammer, Trigger and Hammer Springs, Disconnect and Disconnect Spring.

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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.

Armaspec Lifetime Warranty

  • All Armaspec products carry a LIFETIME WARRANTY and are warranted to be free from defects in material or workmanship.
  • Should there be a defect, we will repair or replace the product at our discretion at no cost to you.
  • Lifetime warranty does not apply to products sold as “blemished” or “manufacturer refurbished”.
  • You must have proof of purchase to initiate a WARRANTY claim.

Please email to to request an RMA number.

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

Customer Reviews

Based on 4 reviews
Bobby Hewitt
Great LPK

I got this LPK because it has some FDE parts in it so the parts that are FDE made less work for me due to I was Ceracoating the parts that weren't already FDE and it's great quality parts. It's an all aero precision build 10.5 " with a at3 2 stage trigger and a ballistic advantage barrel that I Ceracoated as well. Hated to cover up that great finish that was on it but I wanted it FDE. I am waiting on correct brace so pics don't do it justice

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.

Paul Jeffres
Had all the parts

This lower parts kit was very well done. Just wish there was a little more labeling. My old eyes sometimes have trouble telling small springs apart. Other than that it all fit well.

Not you
Great Lowe parts kit

Great looking lower parts kit. Only things I didn’t like was the finish of the mag catch. Has that weird flat finish that shows all kinds of imperfections. (Much like most chamber dust covers.) would have like to seen that piece finished in FDE instead… And I’m not sure this should be against this kit or aero precision but it’d be nice to have the set screw for the aero lower rear takedown pin. Very small qualms though. The 45 degree ambidextrous safety feels great and the FDE finish on everything actually matched most of my other FDE components quite well.

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.

Prentiss Rowell
Armaspec AR-15 Superlight Lower Parts Kit - ARM252

It one of the best of not the best LPK on the market.

Thanks for sharing your feedback! We're glad you're satisfied with your purchase. Cheers!