AT3™ AR-15 Enhanced Billet Trigger Guard Assembly

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AT3™ Pro-Builder™ AR-15 Lower Parts Kit - No Grip or Trigger Assembly

AT3™ Pro-Builder™ AR-15 Lower Parts Kit - No Grip or Trigger Assembly


AT3 Tactical AR-15 Ambidextrous Safety Selector Assembly - Black


AT3 Billet Trigger Guard – Perfect for Winter and Gloves

This billet aluminum trigger guard works with all mil-spec lower receivers, and makes additional room for manipulating the trigger. The forward scoop of this trigger guard makes it easy to operate the trigger, even with gloves in cold weather. As Minnesotans, having this kind of relief near the magazine well helps us out significantly!

This assembly is 100% made in the USA. Plus, it’s easy to install with roll pin punches, a hammer, and allen wrench set.

How Do I Install this Trigger Guard?

This trigger guard’s installation is fairly simple with the right tools. Make sure to support the “ears” of your lower around the trigger pocket. These thinner parts of the lower are liable to break when you start tapping in the roll pin. The support doesn’t need to be anything special; lots of people just use a spare roll of masking tape.

Once your lower is supported, set the trigger guard inside the pocket, with the curved side closest to the magazine well. Using a small allen wrench, secure the front section by backing out the small set screw until its flush with the receiver. After aligning the rear section, carefully tap in the roll pin with a punch and hammer until that too is flush with the receiver.


  • Fit: AR-15
  • Material: 6061-T6 Aluminum
  • Finish: Hardcoat Anodized

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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.

AT3 Lifetime Warranty Logo

All AT3 Tactical Brand Products carry a lifetime warranty against manufacturer’s defects.

This includes AT3 Red Dot SightsHandguardsIron Sights, and any other product that carries the “AT3 Tactical” or “AT3™” name. For other brands (ex. Magpul or Troy), please refer to the manufacturer’s warranty policy.

In the event that your AT3™ product becomes unusable, we will repair or replace the product at no charge to you.

If we cannot repair your product, we will replace it with a product in perfect working order of equal or better physical condition. The warranty is fully transferable, but we may require information about the original purchase to validate the authenticity of the product.

If your product is in need of warranty service, please contact AT3 Tactical to start the process

Our contact info is available here. To expedite processing, please provide your order information and description of the defect.

Please note: The AT3 Lifetime Warranty does not cover loss, theft, intentional damage or cosmetic damage that doesn’t affect the performance of the product.

Customer Reviews

Based on 2 reviews

The quality I’ve come to expect from AT3.

FYI if you plan on using a pistol grip with a duck bill you will need to slighty shave the underside against the lower to get it Sqaure- due to the pitch of the guard. See picture

Seth Dipaola
Machining off.

Took a lot of strength to get it to be screwed into a brand new lower. The roll pin isn’t even all the way in because the hole isn’t lined up properly. I haven’t had this issue before on the lowers I’ve put together.