All AR-15 Parts and Accessories
We are consistently adding new products!
AT3 Tactical offers a wide range of top-rated AR 15 parts and tactical accessories. Build your ultimate AR-15 with our great selection of AR-15 scopes, AR-15 magazines, handguards & quad rails, best red dot sights, lower parts kit, iron sights, upper receiver, AR barrels, and more! We also carry AR-15 accessories from the top brands like Magpul, Aero & more! READ MORE
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AT3™
AT3™ FU-BAG™ AR-15 Lost Parts Kit – Springs, Detents, Replacement Components
Made an "Oops" with your New Build? You Detent-Launchin', Spring-Losin' Fool, you. We've all been there. Whether it's rolling the dice on that bargain bin LPK in your local...2 Options -
AT3™
AT3™ Castle Nut for AR-15 Buffer Tubes – 10 Colors Available
Secure Your AR15 Buffer Assembly with a Steel Castle Nut This steel castle nut is an essential piece of an AR15 buffer tube/stock assembly. With standard cuts for use with...10 Options -
AT3™
AT3™ SPEAR M-LOK Handguard for AR-15 – 9, 12, & 15 inch Lengths
The AT3 SPEAR™ is our best, most secure handguard. Simple to install, lightweight, and easy on the wallet. The slim free-float design enhances accuracy while minimizing the weight of...24 Options -
AT3™
AT3 ARO™ Micro Red Dot Reflex Sight with Optional Riser Mount
AT3's Smallest and Most Versatile Micro Red Dot Sight Even a great sight can be made better. In addition to all models now shipping with a rubber cover, the...2 Options -
AT3™
AT3™ ALPHA Micro Red Dot Sight with Shake Awake and Cantilever Riser Mount
AT3's First Shake Awake Red Dot Sight The ALPHA represents the best - value, features, and usability - that you can expect from an AT3 red dot sight. This... -
Hexmag Series 2 5.56 30rd AR 15 Magazine
An All-around Magazine for Any Shooter - Lightweight and Extremely Durable The Hexmag Series 2 5.56 30rd Magazine is the next generation in AR-15 Magazines featuring the iconic Hexture™ design...4 Options -
Breek Arms WARHAMMER Mod 2 Ambidextrous AR 15 Charging Handle
Ultra-Slick, Ultra-Affordable Ambidextrous AR15 Charging Handle If you're looking for a charging handle upgrade that's above and beyond the mil-spec, with features that rival the big brands, at a price...4 Options -
AT3™
AT3™ RD-50 PRO™ Micro Red Dot with Cantilever Riser Mount
Rugged and Reliable, New and Improved. Premium Features and Outstanding Value. The best value in red dot sights just got even better. Optimized for the AR-15, the AT3 RD-50...4 Options -
AT3™
AT3™ Mil Spec End Plate for AR-15 – 10 Colors Available
Mil-Spec Steel Endplate for AR15 Lower Receivers This standard endplate is compatible with any mil-spec AR15 lower receiver. Perfect for completing a build that might be missing this component, or...10 Options -
Duramag 20 Round 350 Legend Magazine for AR-15 – Stainless Steel
20 Round Single-Feed 350 Legend Magazine Boasting a full 20 round capacity of 350 Legend, this magazine is designed for serious shooters who require the most out of their magazines.... -
AT3™
AT3™ LEOS™ Red Dot Sight with Integrated Laser Sight & Riser
The AT3 LEOS™ (Laser Enabled Optic System) is Accurate, Versatile, Reliable, & Packed with Features. The AT3 LEOS™ is ideal for home defense, tactical & law enforcement, hunting, plinking,...2 Options -
Magpul 30-Round Bulk AR 15 PMAGS M2 – .223 / 5.56 NATO – MAG571...
Buy in Bulk And Save! M2 MOE 30-Round Pmags Are Now Available in 2, 3, 6, 10, 25, 50, and 100 Packs The Magpul PMAG 30 Round M2 MOE Mag...8 Options -
AT3™
AT3™ Pro Quad Rails – Free Float AR15 Handguards – 4 Lengths Available
The New and Improved Pro Quad Rail - Lightweight, Rigid, and Easier to Install The quad rail is still the gold standard of secure accessory mounting, but they're in...12 Options -
NEW
Hera H3 Gen 2 30 Round AR-15 Magazine
Hera H3 Gen 2 30 Round AR-15 Magazine Made in Germany with high-impact grade polymer, the Hera H3 30 round magazine is a reliable choice to carry your ammo. Compatible...3 Options -
AT3™
AT3™ Mil-Spec AR-15 Pivot Pin/Takedown Pin Detent Springs – 2 Pcs
Mil-Spec AR-15 Pivot Pin/Takedown Pin Detent Springs (2 Pieces) All AT3 Tactical lower receiver parts meet or exceed Mil-Spec. These parts are guaranteed to fit and function in your AR... -
AT3™
AT3™ AR-15 Gas Tube Roll Pins – 2pcs
AT3™ AR-15 Gas Tube Roll Pins 2 pcs AR-15 gas tube rolls pins. These parts are guaranteed to fit and function in your AR and are perfect for replacing lost... -
NEW
Hera H1 Gen 2 10 Round AR-15 Magazine
Hera USA H1 Gen 2 10 Round AR15 Magazine Made in Germany with high-impact grade polymer, the Hera H1 10 round magazine is a reliable choice to carry your ammo....3 Options -
AT3™NEW
AT3™ Slick Side AR-15 Upper with Black Nitride 5.56 Bolt Carrier Group
AT3 Black Nitride Bolt Carrier Group with Slick Side Billet Upper - 8 Colors to Choose From Get a head start on your build with the AT3 Black Nitride Bolt...8 Options -
AT3™
AT3™ 3xP Scope – 3x Prism Scope with Illuminated BDC Reticle
Accurate, Compact Prism Scope with Intuitive BDC Reticle Whether you're ringing steel or on the hunt, having a reliable scope with a good field of view is a great... -
Magpul Cerakote 30 Round PMAGs – FDE, ODG, and Pink Coated by AT3
Flat Dark Earth PMAGs and More - Cerakote by AT3 Our customers have been asking for years about Magpul Flat Dark Earth PMAGs, and other colors Magpul discontinued. Now, they're...3 Options -
Duramag Speed AR-15 30 Round Aluminum Magazine – .223/5.56 NATO
Affordable And Reliable Aluminum Magazine With Unequaled Durability The Duramag Speed 30 Round Aluminum Magazine is an improved USGI magazine that is battle-proven and lightweight making it a consistent magazine...10 Options -
AT3™
AT3 M-LOK Rail Covers – Retro & Old Glory Design – 2 Colors Available
Solid Construction M-LOK Rail Cover That Installs Directly to M-LOK Handguards The AT3 M-LOK Covers are lightweight, slim, single-piece construction designed to work with polymer or aluminum handguards. We include...8 Options -
AT3™
AT3™ Pro Series AR 15 Flip-Up Backup Iron Sights (BUIS) – Front & Rear...
Sleek and lightweight, durable and accurate - the AT3 Pro Series Backup Iron Sights are the ultimate value in AR-15 iron sights! Accurate and Easy to Use Standard A2 sight...2 Options -
Magpul MOE M-LOK Furniture Kit – Stock, Carbine Handguard & Grip for AR 15
Customize the look and feel of your AR with a Magpul MOE Furniture Kit. Save 15% vs purchasing the parts individually, plus free shipping. This furniture set contains 3 easy-to-install...24 Options
We are consistently adding new products!
AT3 Tactical offers a wide range of top-rated AR 15 parts and tactical accessories. Build your ultimate AR-15 with our great selection of AR-15 scopes, AR-15 magazines, handguards & quad rails, best red dot sights, lower parts kit, iron sights, upper receiver, AR barrels, and more! We also carry AR-15 accessories from the top brands like Magpul, Aero & more!
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