AT3™ 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5 Inch Faxon Firearms Barrel – No BCG/CH
or 4 interest-free payments of $63.90 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.
- Free standard shipping on orders $139+ details
- 90-day no-hassle returns policy
- Backed by the AT3 Lifetime Warranty! what it covers
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Product description
AT3 10.5″ 9mm Complete Upper
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 Ballistic Advantage barrels, and 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 by bundling quality parts – already assembled vs. purchasing the components separately.
This fully assembled AR-15 complete upper includes:
Faxon Firearms 10.5″ Light Tapered 9mm Barrel
With no need for the traditional AR15 gas system, and far less heat and stress, 9mm blowback uppers like these don’t need a heavy barrel to perform great. Faxon’s 10.5″ Light Tapered Barrel ensures that your pistol caliber AR is easy to manipulate, and will hold up under heavy use.
AT3 SPEAR 9″ 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 feature M4 feedramps for reliable feeding of ammunition.
KAK Industry Micro Flash Can
Learn more about the KAK Flash Can
Top Add-Ons
AT3 Tactical 9mm Bolt Carrier Group with Black Nitride Finish and Removable Rear Weight
AT3’s 9mm Bolt Carrier Group is the go-to solution for a variety of builds. Whether you’re going on a converted lower for Colt or Glock style 9mm mags, this bolt carrier will work with your magazines, and features a removable rear weight for use with Armaspec or JP recoil systems.
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: Blowback
- Barrel Profile: Slim Taper
- Twist Rate: 1:10
- Barrel Steel: 4150 Chrome Moly Vanadium
- Barrel Finish: QPQ Corrosion Resistant (Black Nitride)
- Chamber: 9mm Luger
- Muzzle Thread: 1/2-28
- Barrel Extension: Blowback/Integrated
- 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
The single most important component of an accurate AR-15 is the barrel. AT3 uppers are built using barrels from top brands like Ballistic Advantage and Faxon Firearms, for excellent performance and accuracy.
But the quality doesn’t stop at the barrel. 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.
All 8 options on this page
- AT3™ 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5 Inch Faxon Firearms Barrel – No BCG/CH - Color: Burnt Bronze SKU FFML-P-SPEAR-PCC-0-BB
- AT3™ 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5 Inch Faxon Firearms Barrel – No BCG/CH - Color: Tungsten SKU FFML-P-SPEAR-PCC-0-TG
- AT3™ 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5 Inch Faxon Firearms Barrel – No BCG/CH - Color: Titanium SKU FFML-P-SPEAR-PCC-0-TI
- AT3™ 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5 Inch Faxon Firearms Barrel – No BCG/CH - Color: Black SKU FFML-P-SPEAR-PCC-0
- AT3™ 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5 Inch Faxon Firearms Barrel – No BCG/CH - Color: Flat Dark Earth SKU FFML-P-SPEAR-PCC-0-FDE
- AT3™ 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5 Inch Faxon Firearms Barrel – No BCG/CH - Color: Red SKU FFML-P-SPEAR-PCC-0-RED
- AT3™ 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5 Inch Faxon Firearms Barrel – No BCG/CH - Color: Pink SKU FFML-P-SPEAR-PCC-0-PNK
- AT3™ 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5 Inch Faxon Firearms Barrel – No BCG/CH - Color: OD Green SKU FFML-P-SPEAR-PCC-0-ODG
Customer reviews 3
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Questions & Answers 3
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would this be compatible with a psa gen4 lower
jared · May 20, 2025AT3 Support Team — Yes it will be
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1) Will the AT3 Complete 9mm upper work with my EPC9 Glock mag lower? 2) If so, will it work with my EPC 9 bolt carrier?
Patrick Wolfe · Feb 2, 2025AT3 Support Team — Yes, the AT3™ 10.5 Inch Complete PCC AR 15 Upper with a 9mm Faxon Firearms Barrel will work with your EPC9 Glock mag lower. The upper is designed to be compatible with Glock-style magazines, which is the same magazine type that the EPC9 lower accepts. It will also work with your EPC9 bolt carrier. The EPC-9 platform is designed to utilize Glock-compatible bolt carrier groups (BCGs), and since the our upper is made for 9mm applications, it should function correctly with the EPC9 BCG as well.
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In your opinion, what is the best lower (stripped or complete) to pair with this upper?
Joe · Nov 6, 2024AT3 Support Team — I recommend our AT3™ AT-15 Lower Receiver.
Warranty & returns
Backed by the AT3 Lifetime Warranty!
All AT3 Tactical Brand Products carry a lifetime warranty against manufacturer’s defects.
This includes AT3 Red Dot Sights, Handguards, Iron 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.
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.
