Armaspec AR-15 Superlight Gun Builders Kit – ARM251

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Lightweight AR-15 LPK with Anti-Rotation Pins

The Armaspec AR-15 Superlight Gun Builders 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 you have been on the lookout for.

The Armaspec Superlight Gun Builders Kit is among the products of the top-notch 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 parts from Armaspec is ideal for maintaining and upgrading your firearms. The durability, reliability, and excellent build quality of these parts 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 Enhanced Superlight Takedown and Pivot Pins
  • 1x Stainless Steel Takedown detent
  • 1x Takedown Detent Spring
  • 1x Stainless Steel Pivot Detent
  • 1x Pivot Detent Spring
  • 1x Stainless Steel Anti-Walk Trigger/Hammer Pins
  • 1x Stainless Steel Buffer Retainer
  • 1x Magazine Catch
  • 1x Magazine Spring
  • 1x 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 Hex Keys for Anti-Walk Pins

Note: This is “NOT” a complete lower parts kit. This is a builder’s kit. This Kit does not include the Pistol Grip, Pistol Grip Screw and Washer, Trigger and Hammer, Trigger and Hammer Springs, Disconnect, Disconnect Spring, Trigger Guard, and Roll Pin.

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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
Good kit, rough safety

Overall this kit is great, especially if you are looking for something with color. The only issue I have is the safety selector/detent combo is awful, nearly unusable. Super rough and barely functional. I’m sure this is a one-off machining error that probably just snuck its way through. Have reached out to Armaspec for a replacement.

Jeffrey Sieting
Armaspec AR-15 Superlight Gun Builders Kit - ARM251

Great price for quality components

Thanks for the review! We're glad to hear that you're happy with the quality and price of the kit.

Thomas M.
Good value

Great parts kit for the money, I highly recommend their products.

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

Dee Daily
Great product great price

Great product great price easy to use great quality

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