AT3 Tactical
High-Quality AR 15 Parts & Accessories by AT3 Tactical
Our signature line of parts & accessories – we keep the prices low by selling directly to the customer and avoiding distributor markups! 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™ 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... -
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™ 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...2 Options -
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 -
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 -
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 -
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... -
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... -
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™ 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™ 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 -
AT3™
AT3™ 4x Magnified Red Dot Kit – Includes Red Dot, Riser, & 4x Magnifier
Combine our Best-Selling Red Dot Sight with our Latest Magnifier for a Crisp Sight Picture from 1x to 4x Magnification Save on these two optics by bundling them together!... -
AT3™
AT3™ Low Profile Steel AR 15 Gas Block + Gas Tube + Roll Pin...
Buy As A Set And Save! This combo includes your choice of 4 different sizes of gas blocks, your choice of 4 different gas tube lengths, and 2 roll pins....16 Options -
AT3™
AT3™ Slick Side Upper | Billet Upper Receiver for AR-15
Tough, Sleek, and ready for the AT3 SPEAR M-LOK Handguard Machined from billet aluminum, this unique slick-side upper receiver has no forward assist, includes a dust cover, and matches perfectly...8 Options -
AT3™
AT3™ ARO + 4xRDM Magnified Red Dot Kit – Includes Red Dot, Riser, &...
Combine our Latest Red Dot Sight and Magnifier for a Crisp, Open Sight Picture from 1x to 4x Magnification Save on these two optics by bundling them together! More information... -
AT3™
AT3™ AR-15 Bolt Carrier Group – 5.56 NATO/.300 Blackout – Black Nitride
AT3 Tactical is bringing you the best with this Top-Tier Black Nitride Bolt Carrier Group Getting a high quality bolt carrier group (BCG) that runs well in your rifle is... -
AT3™
AT3™ AR 15 Ejection Port Cover C Clip -2pcs
AT3™ AR 15 Ejection Port Cover C Clip 2 pcs of AR-15 ejection port cover c-clips. These parts are guaranteed to fit and function in your AR and are perfect... -
AT3™
AT3™ MOTHERFU-BAG™ – The BIG AR-15 Lost Parts Kit – Springs, Detents, Wear Parts,...
Launch a detent? Snap a spring? Don't get mad, just fix it with this AR-15 Lost Parts Kit! Alright, so y'all seem to like the FU-BAG. Like a lot. Which... -
AT3™
Armorer’s Wrench for AR-15 & Multi-Fuction Tool by AT3™
This perfect tool for AR builds that allows installation & removal of barrel nuts, muzzle devices, rifle buffer tubes, and castle nuts. This tool includes: A barrel nut wrench that... -
AT3™
AT3™ Mil Spec AR-15 Buffer Tube – 10 Colors Available
Mil-Spec AR-15 Carbine Buffer Tube Made 6061-T6 aluminum construction with a black anodized finish, with six precision-machined notches to securely lock your stock into position. This buffer tube has a...10 Options -
AT3™
AT3™ AR-15 M-LOK Handstop – Available in 10 Colors
A Small Addition To Your AR For A More Positive Handling & Improved Weapon Control The AT3 AR-15 M-LOK Handstop is a lightweight and low-profile addition to M-LOK handguards that...10 Options
High-Quality AR 15 Parts & Accessories by AT3 Tactical
Our signature line of parts & accessories – we keep the prices low by selling directly to the customer and avoiding distributor markups!
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