AT3™ Slick Side Upper | Billet Upper Receiver for AR-15

Based on 131 reviews

Out of Stock
Orders will Ship within 1 Business Day
Backed by the AT3 Lifetime Warranty!
TOP ADD-ON'S

Breek Arms WARHAMMER Mod 2 Ambidextrous AR 15 Charging Handle - Black

$42.46
Magpul BEV Block - AR-15 Vise Block Tool - MAG536

Magpul BEV Block - AR-15 Vise Block Tool

$47.45

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 with AT3’s SPEAR handguards with anti-rotation features. This upper also features more material to surround your barrel extension than typical forged receivers, making it more ideal for precision. This lower matches up with mil-spec lower receivers for a secure, reliable fit.

The AT3 Slick Side Upper Receiver also comes in a wide variety of colors, ranging from classic black, Magpul-matching Flat Dark Earth, vivid Pink, USMC Red, and even new metallic shades like Tungsten, Titanium, and Burnt Bronze. Flat black uppers have classic hard-coat anodizing, while the other colors receive a durable Cerakote finish.

Features:

  • M4 Feedramps
  • .250 takedown pin holes
  • Low-profile brass deflector
  • Includes dust cover
  • No Forward Assist

Specifications:

  • Platform: AR15
  • Material: 6061-T6 billet aluminum
  • Finish
    • Black: Type III Hardcoat Anodized
    • Flat Dark Earth: H-267 Magpul® Flat Dark Earth
    • OD Green: H-232 Magpul® OD Green
    • Pink: H-224 SIG™ Pink
    • Burnt Bronze: H-148 Burnt Bronze
    • Tungsten: H-237 Tungsten
    • Titanium: H-170 Titanium
    • Red: H-167 USMC Red
  • Compatibility: Perfect match for AT3 SPEAR Handguards, standard AR15/M16 bolt carriers, charging handles, and some other handguards.
  • Weight: 7.1 oz

 

Note: Not compatible with Wheeler Delta Series Upper Vise Block. We suggest to use the Magpul Bev Block

Products available on this page:

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.

4.8 131 reviews
1
0%
2
0%
3
3%
4
9%
5
88%
4.8 131 reviews
1
0%
2
0%
3
3%
4
9%
5
88%
Customer Images
Leave your review
Rating
4.8 131 reviews
1
0%
2
0%
3
3%
4
9%
5
88%
Customer Images

Customers who viewed this item also viewed these products

AT3™ Forged AR-15 Stripped Upper Receiver

(11)
$89.99
AT3 Forged AR Upper – Just Add Forward Assist and Dust Cover The Forged
Black Upper with BCG

AT3™ Slick Side AR-15 Upper with Black Nitride 5.56 Bolt...

(11)
$171.98$146.18
AT3 Black Nitride Bolt Carrier Group with Slick Side Billet Upper – 8 Colors
AT3™ Slick Side Upper Receiver and SPEAR XL Suppressor Ready Handguard Combo

AT3™ Slick Side Upper Receiver and SPEAR XL Suppressor Ready...

(1)
$229.99
AT3 SPEAR XL M-LOK Suppressor Ready Handguard with Slick Side Upper This suppressor-ready handguard
AT3 AR-15 Billet Upper and M-LOK Handguard with Cerakote Finishes - 7 Colors

AT3™ AR-15 Upper Receiver and SPEAR Handguard Combo

(160)
$169.99
Getting Started on Your Next Build? Go Sleek and Lightweight with our Billet Upper

AT3™ Forged AR-15 Upper Receiver and Pro Quad Rail Combo

(4)
$156.99
AT3 Forged Upper with Lightweight Quad Rail Combo If you’re looking to update your
AT3 Tactical Billet Upper and Pro Quad Rail AR-15 Handguard Combo with Cerakote Finishes

AT3™ AR-15 Upper Receiver and Pro Quad Rail Handguard Combo

(19)
$179.99
Upgrade or Start Your Next Build with our Newest Billet Upper and Pro Quad
Fortis Stripped Billet Upper Receiver - AT3 Tactical

Fortis Stripped Billet AR-15 Upper Receiver

$189.95
Sleek Billet Upper Receiver for AR-15 This billet upper receiver keeps up with Fortis’
Slick Side Upper with Ambi Charging Handle and Bolt Carrier Group

AT3™ Slick Side Upper with Bolt Carrier Group and Breek...

(2)
$219.93$186.94
Complete your Next Build with AT3’s Top-Selling Billet Upper Receiver and BCG plus the

Frequently purchased together

AT3 Spear M-LOK Handguard with Cerakote Finishes - 7 Colors

AT3™ SPEAR Free Float AR-15 Handguard – 9, 12, &...

(717)
$99.99
The AT3 SPEAR™ is our best, most secure handguard. Simple to install, lightweight, and
AT3™ AR 15 Gas Tube & Carbine Gas Tube Length

AT3™ AR-15 Gas Tube - Carbine, Mid, Rifle, & Pistol...

(73)
$14.39
Quality, USA made stainless steel gas tubes with roll pins for AR rifles Note:

AT3 Tactical Standard GI AR-15 Charging Handle - 9 Colors...

(54)
$18.99
Classic Mil-Spec Charging Handle – Light and Strong – A Great Value Easily chamber
AT3™ Mil-Spec AR-15 Pistol Grip Lock Washer

AT3™ Mil-Spec AR-15 Pistol Grip Lock Washer

(7)
$1.19
Mil-Spec AR-15 Pistol Grip Lock Washer If you’re looking for a Pistol Grip Lock
Magpul MS4 Dual Multi Mission Quick Detach Sling - MAG518

Magpul MS4 Dual Multi Mission Quick Detach Sling - MAG518

(59)
$66.45
Heavy-duty QD Sling For A More Secure And Fast Action Rifle Handling The Magpul
AT3 Tactical AT-15 Lower Receiver - AR-15 Stripped Lower Receivers

AT3™ AT-15 Stripped Lower Receiver - Anodized and Cerakote

(14)
$99.99
AT3 Tactical AR-15 Cerakote Stripped Lower Receiver The AT-15 is the AT3 Tactical take
AT3™ AR-15 Bolt Carrier Group -  5.56 NATO/.300 Blackout - Black Nitride

AT3™ AR-15 Bolt Carrier Group Black Nitride - .223/5.56 NATO...

(191)
$81.99$69.69
AT3 Tactical is bringing you the best with this Top-Tier Black Nitride Bolt Carrier
Magpul MOE-K2+ Pistol Grip - AR15/M4 - MAG532

Magpul MOE-K2+ Pistol Grip - AR-15/M4 - MAG532

(40)
$23.70
Full-Size Grip Design With More Vertical Grip Angle for Your AR15/M4 The Magpul MOE-K2+

Strike Industries T-Bone Gas Busting AR-15 Charging Handle

(12)
$34.95
Strike Industries T-Bone Gas Busting AR-15 Charging Handle Revolutionize your AR-15 setup with the
AT3 Tactical Carbine Buffer Spring for AR15

AT3™ Carbine Buffer Spring for AR-15

(19)
$7.49
Carbine Buffer Spring for 6-Position Adjustable Buffer Tubes This spring will fit in any
KAK Flash Can: Slimline -1/2*28 Thread

KAK Industry Slimline Flash Can - 5/8x24 - 9mm &...

(15)
$25.00
Designed Smaller and Shorter to Fit into Slim Rail Systems – Redirects Muzzle Gasses

Faxon Firearms 6.5 Grendel/6mm ARC AR-15 Bolt – 9310 Steel...

$70.00
Improved Reliability & High-Quality Nitride Coating – Ideal Bolt Upgrade For 6.5 Grendel Rifles

Questions & Answers

Don't see the answer
you're looking for?

Loading questions...