Open Box Return - AT3™ 10.5″ .223/5.56 Assembled AR-15 Pistol Upper – Black, Faxon-black-nitride
or 4 interest-free payments of $71.81 with 
6 Magazines Per Order: Due to extreme volume, we are limiting sales of magazines to 6 per customer order. This applies to individual and bundled magazines. AT3 reserves the right to cancel any order over the 6 magazine limit.
Product description
The AT3 10.5″ Pistol Upper with SPEAR M-LOK Handguard
Built to Order – Ships Within 3 Business Days
AT3 Complete Upper assemblies are Built for Accuracy and Reliability – Guaranteed.
- Quality Where it Counts – premium components like Faxon Firearms or Anderson Manufacturing Barrels plus AT3 Tactical’s handguards and uppers. Don’t settle for “bargain uppers” with unknown components.
- Guaranteed Reliability– Carefully assembled before shipment, and backed by the AT3 Lifetime Warranty
- Unbeatable Value – Unbeatable quality in the price range. Save vs purchasing the components separately.
This fully assembled AR-15 complete upper includes:
- Your Choice of 10.5″ Barrel from Anderson Manufacturing or Faxon Firearms! (with low profile gas block & carbine gas tube)
- AT3 SPEAR 12″ Free Float M-LOK handguard
- AT3 Tactical Billet Upper Receiver
- KAK Industry Flash Can
Get your new upper complete with the barrel you want!
The 10.5″ Anderson Manufacturing barrel is highly affordable, featuring a rugged nitride finish. Faxon Firearms’ 10.5″ barrel is geared towards high performance, featuring great accuracy with a variety of 5.56 bullet weights, and a corrosion-resistant QPQ finish. You can learn more about these two great products with the links below.
- Anderson Manufacturing 10.5″ M4 Carbine Length Barrel
- Faxon Firearms 10.5″ SOCOM Carbine Length Barrel
AT3 SPEAR 12″ Free Float M-LOK handguard
Unique slim and lightweight design with M-LOK attachment points. Rock-solid 6061 aircraft aluminum handguard that withstands the harshest treatment. 5-slot M-LOK-to-Picatinny rail section included 
AT3 Tactical Billet Upper Receiver
Precision machined from 6061-T6 aluminum, this assembled upper is sleek, with extra material around the barrel extension for superior accuracy. It mates perfectly with our SPEAR handguard and features M4 feed ramps for reliable feeding of ammunition. 
KAK Industry Flash Can
One of the most popular muzzle devices for AR15 pistols. The conical shape directs muzzle blast and noise directly in front of the shooter, reducing concussion for the shooter. The standard flash can is only 3.5 inches in length and fits perfectly under the SPEAR handguard. 
Top Add-Ons
AT3 Black Nitride Bolt Carrier Group
Finish your complete upper with a reliable, easy to clean Black Nitride Bolt carrier group from AT3. They feature M16 carriers, and MPI inspected bolts made from 9310 steel and properly staked grade 8 gas key screws. 
Your choice of Standard GI or Extended-Latch Charging Handles from AT3 
These 7075-T6 charging handles slide right into our uppers for a complete top end. Choose between a standard latch and extended latch designs to fit your needs and budget.
More info:
- This product is built-to-order in our Minnesota facility. Quality takes time – please allow up to 7 days for your order to ship.
- All AT3 upper assemblies come with a Lifetime Warranty – if you ever have an issue, let us know, and we’ll make it right. It’s that simple.
- Don’t see the options you’re looking for? Let us quote you a custom upper – contact us now.
Specifications:
- Barrel Length: 10.5″
- Total Assembly Length: 20″
- Gas System: Carbine
- Barrel Profile: Government profile
- Twist Rate:
- Anderson: 1:7
- Faxon: 1:8
- Barrel Steel: 4150 Chrome Moly Vanadium
- Barrel Finish:
- Anderson: Parkerized
- Faxon: QPQ Corrosion Resistant (Black Nitride)
- Chamber: 5.56 NATO
- Muzzle Thread: 1/2-28
- Barrel Extension: M4
- Diameter at Gas Block: .750″
- Gas Block Type: Low-profile
- Receiver Material: Billet 6061-T6 Aluminum
- Finish
- Black: Hardcoat Anodized
- Flat Dark Earth: H-267 Magpul® Flat Dark Earth
- OD Green: H-232 Magpul® OD Green
- Pink: H-224 SIG™ Pink
- Red: H-167 USMC Red
- Burnt Bronze: H-148 Burnt Bronze
- Tungsten: H-237 Tungsten
- Titanium: H-170 Titanium
3 reasons why AT3 Complete Uppers are better than the rest.
1 – Quality Where it Counts
Our AT3 handguard and upper work together to provide superior accuracy, meaning this upper assembly offers quality without compromises. Many of the “bargain” complete uppers on the market source their parts from the lowest bidder – at the expense of accuracy and reliable function. AT3 is committed to using only top-quality components in our upper assemblies.
2 – Guaranteed Reliability
AT3 complete uppers are assembled with strict quality controls and carefully packaged for delivery to the customer. All AT3 complete uppers offer a Lifetime Warranty – if you ever have an issue, let us know, and we’ll make it right. It’s that simple.
3 – Unbeatable Value
When you buy a complete upper, you’ll save money and parts and assembly vs purchasing the components separately. Our complete uppers are not the cheapest on the market, but they deliver unbeatable quality in the price range. We sell direct to the customer, and cut out the middle-men, to deliver the best value in AR-15 upper assemblies.
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Warranty & returns
90-day no-hassle returns
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.