Fall Clearance Sale 2019

AT3 Brand Products

Our Signature Line of Quality AR 15 Parts and Accessories. Lifetime Warranty & Prices that won't Break the Bank

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To Provide Everything You Need to Build & Customize Your AR Rifle: The Best Products, Expert Advice, and Superior Service
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Our Customers Speak For Us

Shipping my M-LOK Hand Stop Kit was extremely fast. What a great company for all of my AR needs. Will be doing more business with you guys for my next build!
- Jere H.
Design and machining, aesthetics and finish, quality and function, price and shipping time -- ALL PERFECT!
- Joshua W.
Good variety of products for my rifle. Helpful articles, especially as I did my first build. Great customer service that was patient and willing to help me out with my questions.
- Jarrod M.
Product works exactly as designed and advertised. Used the Red Dot on my Carbine rifle and AR-15 without a fail. Stays true through re-mounting and range work.
- Matthew N.
Good customer support and fast shipping! Triggers, RD-50 Pro and handguards can't be beat for the price -- then you add the lifetime warranty!
- Tony H.
I choose AT3 for many needs for building my rifles. The customer service is amazing and their location is great being in the Midwest and ship product same day for most orders; receive it in 3 days or less!
- Jarrod P.

Recent Arrivals

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Why Buy From AT3 Tactical?

Free shipping on orders over $50. Most orders ship same-day

Get educated with the AT3 AR Academy, verified customer reviews, and installation videos

If you don’t like it, send it back! We pay shipping

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The Official US Army Manual for AR15/M4/M16

This Book Includes:

Detailed Part Diagrams – Maintenance Guidelines – Operating Instructions – Cleaning Procedures – Troubleshooting Guidance – Tips and Tricks

It’s like the Missing Manual for AR Rifles!

AT3 Tactical AR Academy - Recent articles

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Choosing the Best AR 15 Magazine
Choosing the Best AR 15 Magazine
Choosing the best AR 15 magazine can be a challenge as the Internet is filled with recommendations and preferences. The attributes that affect performance are valued differently by enthusiasts. Learn how to choose the best AR 15 magazines.

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AR-15 Buffer Weight (and Why It Matters)
AR-15 Buffer Weight (and Why It Matters)
The buffer weight may look like a paperweight, but without one your rifle is effectively an awkward, single-shot rifle. We’ll take a look at the main types of weights, what they’re used for, how to use them to optimize your rifle's gas system.

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