AT3 Tactical
AT3 Tactical
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AT3 Tactical Optics and AR-15 Parts

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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AT3 Tactical Rifles AT3 Tactical Red Dot Sights AT3 Tactical Complete Upper Receivers AT3 Tactical AR-15 Build Kits & Assemblies AT3 Tactical Lower Receivers AT3 Tactical Lower Receiver Parts AT3 Tactical Scopes AT3 FLATLINE Upgrades AT3 Tactical Buffer Tube Parts AT3 Tactical AR-15 Furniture Kits AT3 Tactical Backup Iron Sights AT3 Tactical Optic Mounts AT3 Tactical AR-15 Charging Handles AT3 Tactical AR-15 Bolt Carrier Groups AT3 Tactical Upper Receivers & Parts AT3 Tactical Barrels AT3 Tactical Muzzle Devices AT3 Tactical Gas Blocks and Tubes AT3 Tactical Handguards and Quad Rails AT3 Tactical Handguard Accessories AT3 Tactical AR-15 Sling Mounts AT3 Tactical Front Grips AT3 Tactical Buttstocks AT3 Tactical Pistol Grips AT3 Tactical AR-15 Tools AT3 Swag
543 products
AT3 Barrel Builder Kit – 10.5″ 5.56 NATO Government Profile Carbine Length Barrel, Gas Block & Gas Tube

AT3 Barrel Builder Kit – 10.5″ 5.56 NATO Government Profile Carbine Length Barrel, Gas Block & Gas Tube
$148.49
In stock
2A Basics 9mm 16 Inch Complete AR-9 Upper Receiver - No BCG or Charging Handle

AT3™ 9MM 16″ Assembled Upper – 2A Basics ASAL Handguard – No BCG/Charging Handle
$289.99
In stock
AT3™ Assembled Pistol Upper for AR-15 - 5.56 NATO - 10.5" Barrel - 12" Handguard - No BCG/CH

AT3™ Assembled Pistol Upper for AR-15 – 5.56 NATO – 10.5″ Barrel – 12″ Handguard – No BCG/CH – 3 Colors
3 options
from $402.49
In stock

AT3™ 16″ .22LR Complete Assembled Billet Upper with BCG and Charging Handle
8 options
from $508.99
In stock
AT3 Tactical Lower Parts Kit With 2 Stage Nickel Boron Trigger

AT3™ 2-Stage AR-15 Lower Parts Kit with 4.5lb Nickel Boron Trigger – No Grip or Trigger Guard
2 options
(25)
from $129.99
In stock

AT3 Tactical AR-9 Barrel – 8.3″ – 9mm – Straight Profile
(1)
$86.99
In stock
AT3™ Forged AR-15 Upper Receiver Kit - Includes Matching Forward Assist & Dust Cover Assemblies

AT3™ Forged AR-15 Upper Receiver Kit – Includes Matching Forward Assist & Dust Cover Assemblies
7 options
from $111.49
In stock
AT3 Tactical™ 30mm Cantilever Scope Mount - High

AT3 Tactical™ 30mm Cantilever Scope Mount – High
(5)
$51.99
In stock

AT3™ .22LR Dedicated Stainless Steel AR-15 Bolt Carrier Group
(1)
$166.99
In stock
AT3™ Nickel Boron 5.56 Bolt Carrier Group with Armaspec Victory Ambi Charging Handle

AT3™ Nickel Boron 5.56 Bolt Carrier Group with Armaspec Victory Ambi Charging Handle
6 options
(1)
from $211.98
In stock
AT3 Tactical Gas Rings for AR-15 Bolts - Set of 3

AT3 Tactical Gas Rings for AR-15 Bolts – Set of 3
(6)
$2.99
In stock

AT3 Tactical AR-15 Barrel – 4.5″ – .22LR – Tapered Profile
(2)
$89.49
In stock

AT3 Tactical AR-15 Barrel – 10.5″ – 5.56 NATO – Government Profile – Carbine Length
$114.49
In stock
AT3 Complete .223 Wylde Match Grade Upper Faxon Heavy Fluted Barrel

AT3™ Assembled Match Grade AR-15 Upper – .223 Wylde 16 Inch Faxon Firearms Barrel – No BCG/CH
24 options
(4)
from $506.99
In stock

AT3 Tactical AR-15 Barrel – 16″ – 5.56 NATO – Pencil Profile – Mid-length
(1)
$126.99
In stock
AT3 Tactical ACE Pistol 3 MOA Red Dot Sight - 2 Dot Colors - UTG Super Slim Low Picatinny Mount Kit

AT3 Tactical ACE Pistol 3 MOA Red Dot Sight – 2 Dot Colors – UTG Super Slim Low Picatinny Mount Kit
2 options
from $215.96
In stock
AR-15 Extractor Pin

AT3 Tactical Extractor Retainer Pin for AR-15
(2)
$1.99
In stock

AT3™ ARO + DELTA Red Dot Kit – Includes Red Dot Sight & 3x Magnifier
$333.99
In stock
AT3™ Complete Rifle AR-15 Upper - .223/5.56 16" Ballistic Advantage Barrel - With Nickel Boron BCG and Mil-Spec CH

AT3™ .223/5.56 16″ Complete Assembled AR-15 Upper – With Nickel Boron BCG and Charging Handle
(2)
$555.99
In stock
AT3™ FF-ML 16 Inch .300 BLK Complete Upper - .300 AAC Blackout 16 Inch Ballistic Advantage Barrel - 15" M-LOK Free Float Handguard

AT3™ 16 Inch .300 BLK Assembled AR-15 Upper – 16 Inch Ballistic Advantage Barrel – No BCG/CH
8 options
(7)
from $424.49
In stock

AT3™ LEOS + DELTA Red Dot Kit – Includes Red Dot Sight & 3x Magnifier
2 options
from $293.49
In stock
AT3™ Assembled Forged Upper for AR-15 - 5.56 NATO - 16" Barrel - 15" Free Float Quadrail - No BCG/CH

AT3™ Assembled Forged Upper for AR-15 – 5.56 NATO – 16″ Barrel – 15″ Free Float Quadrail – No BCG/CH – 3 Colors
3 options
(1)
from $428.99
In stock
AT3 Tactical Lower Parts Kit with 2 Stage Nickel Boron Trigger and Magpul MOE Grip - Curved Face - Black

AT3™ AR-15 2-Stage Lower Parts Kit with Nickel Boron Trigger and Magpul MOE Grip
8 options
(6)
from $162.33
In stock
15% offShow Your Love for AT3 with this comfortable tee-shirt!

AT3 Tactical Black Logo T-Shirt
6 options
(19)
$19.99from $16.99
In stock
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