AT3™ 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5 Inch Faxon Firearms Barrel – No BCG/CH - w/Sylvan Magazine Block - 8 Colors
or 4 interest-free payments of $104.25 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 4 brand warranties what it covers
Product description
Compact 9mm PCC Upper with Faxon Barrel and Glock Magazine Compatibility
Built to Order – Ships Within 3 Business Days
Features
- 10.5-inch Faxon Firearms pistol-caliber taper profile barrel
- 4150 CMV steel with QPQ nitride finish inside and out
- 1:10 twist rate stabilizes common 9mm projectiles
- Compatible with Colt and Glock-style magazines, lowers, and bolt carriers
- 11-degree target crown for consistent accuracy
- Sylvan Arms Glock magazine conversion block included
- Easy installation in Mil-Spec AR-15 lowers
- 9-inch SPEAR M-LOK handguard with anti-rotation tabs and anti-slip screws
- M-LOK attachment points at 3, 6, and 9 o’clock positions
- Slick side billet upper receiver for clean lines
- KAK Micro Slimline flash can directs gases and noise downrange
- Available in eight finishes
This assembled upper delivers a compact pistol-caliber carbine platform perfect for home defense, range use, or suppressor builds where you want the low recoil and affordable ammunition of 9mm. The 10.5-inch Faxon Firearms barrel hits the sweet spot for 9mm ballistics—getting maximum velocity from the cartridge while keeping the overall length compact and maneuverable. The 9-inch SPEAR M-LOK handguard keeps the profile slim and lightweight while providing plenty of room for lights, grips, and accessories. This upper includes a Sylvan Arms Glock magazine conversion block so you can use your existing Glock 17 or 19 magazines in a standard Mil-Spec AR-15 lower.
The Faxon Firearms 10.5-inch barrel features a smooth pistol-caliber taper profile that keeps weight down while maintaining rigidity. Built from 4150 CMV steel with QPQ nitride finish inside and out, this barrel is more rigid and rugged than most standard pistol-caliber barrels. The 1:10 twist rate stabilizes common 9mm projectiles, and the barrel is compatible with both Colt and Glock-style magazines, lowers, and bolt carriers. The 11-degree target crown ensures consistent accuracy shot after shot.
Built on AT3’s slick side billet upper receiver, this setup uses simple blowback operation—no gas system to tune or maintain. The 9-inch SPEAR handguard features M-LOK attachment points at 3, 6, and 9 o’clock positions with a lightened Picatinny rail at 12 o’clock. The included Sylvan Arms conversion block is machined from black oxide steel and 6061-T6 aluminum, installs easily into your standard AR-15 lower, and accepts popular Glock 17 and 19 pattern magazines. The KAK Micro Slimline flash can directs gases and noise downrange. Available in eight finishes to match your build.
Note: Does not include bolt carrier group or charging handle. Requires 9mm-specific bolt carrier group. Magazine block does not include last round bolt hold open. Compatible with Glock 17 and 19 magazines. The upper is shipped fully assembled.
Specifications
- Brand: AT3 Tactical
- Model: 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5 Inch Faxon Firearms Barrel – No BCG/CH – w/Sylvan Magazine Block
- MPN: FFML-P-SPEAR-PCC-0-MB
- Caliber: 9mm
- Barrel Length: 10.5 inches
- Barrel Profile: Pistol-caliber taper
- Barrel Material: 4150 CMV
- Barrel Finish: QPQ nitride
- Barrel Twist: 1:10
- Barrel Weight: 1.03 pounds
- Gas System: None (blowback operation)
- Handguard Length: 9 inches (actual 9.25 inches)
- Handguard Type: M-LOK free-float
- Handguard Material: 6061-T6 Aluminum
- Handguard Weight: 9.9 ounces
- Upper Receiver: Slick side billet
- Magazine Block: Sylvan Arms GCB100 (steel and 6061-T6 aluminum)
- Magazine Block Weight: 4.2 ounces
- Muzzle Device: KAK Micro Slimline flash can (1/2×28 thread)
- Color Options:
- Black – Type 3 Hardcoat Anodized
- Flat Dark Earth – H-267 Cerakote Magpul® Flat Dark Earth
- OD Green – H-232 Cerakote Magpul® OD Green
- Pink – H-224 Cerakote SIG™ Pink
- Burnt Bronze – H-148 Cerakote Burnt Bronze
- Tungsten – H-237 Cerakote Tungsten
- Titanium – H-170 Cerakote Titanium
- Red – H-167 Cerakote USMC Red
What’s Included – Installed
- 1x Assembled Upper Receiver
- 1x 9″ SPEAR M-LOK Handguard
- 1x 10.5″ Faxon Firearms 9mm Pistol-Caliber Taper Profile Barrel
- 1x KAK Micro Slimline Flash Can
- 1x 1/2″ Crush Washer
- 1x Sylvan Arms Glock Magazine Conversion Block
Warranty Note: Curated by AT3 Tactical. Components in this kit are covered by each manufacturer’s own warranty — AT3’s warranty does not extend to or replace the warranties of the individual parts included. Warranty terms for some component brands may not yet be listed in the warranty tab; contact the manufacturer directly for in-depth and up to date coverage details.
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 - w/Sylvan Magazine Block - 8 Colors - Color: Black | SKU: FFML-P-SPEAR-PCC-0-MB
- AT3™ 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5 Inch Faxon Firearms Barrel – No BCG/CH - w/Sylvan Magazine Block - 8 Colors - Color: Flat Dark Earth | SKU: FFML-P-SPEAR-PCC-0-MB-FDE
- AT3™ 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5 Inch Faxon Firearms Barrel – No BCG/CH - w/Sylvan Magazine Block - 8 Colors - Color: OD Green | SKU: FFML-P-SPEAR-PCC-0-MB-ODG
- AT3™ 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5 Inch Faxon Firearms Barrel – No BCG/CH - w/Sylvan Magazine Block - 8 Colors - Color: Pink | SKU: FFML-P-SPEAR-PCC-0-MB-PNK
- AT3™ 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5 Inch Faxon Firearms Barrel – No BCG/CH - w/Sylvan Magazine Block - 8 Colors - Color: Red | SKU: FFML-P-SPEAR-PCC-0-MB-RED
- AT3™ 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5 Inch Faxon Firearms Barrel – No BCG/CH - w/Sylvan Magazine Block - 8 Colors - Color: Burnt Bronze | SKU: FFML-P-SPEAR-PCC-0-MB-BB
- AT3™ 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5 Inch Faxon Firearms Barrel – No BCG/CH - w/Sylvan Magazine Block - 8 Colors - Color: Tungsten | SKU: FFML-P-SPEAR-PCC-0-MB-TG
- AT3™ 10.5 Inch Assembled PCC AR-15 Upper – 9mm 10.5 Inch Faxon Firearms Barrel – No BCG/CH - w/Sylvan Magazine Block - 8 Colors - Color: Titanium | SKU: FFML-P-SPEAR-PCC-0-MB-TI
Customer reviews
No reviews yet. Bought this one? Tell the next builder how it went.
Questions & Answers 1
Loading questions…
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.
Backed by the Faxon Firearms Warranty!
Faxon Firearms Warranty
We do understand that life happens and that often a purchase will need to be returned. Customers may return any product, for any reason, in line with the requirements & policies below.
For any errors on Faxon’s part, after notification from the customer, Faxon will dispatch a Fed-Ex Ground label for the return of the product. Upon receipt and inspection at Faxon, a replacement will be sent to the customer via Fed-Ex Ground with tracking information sent to the customer.
REQUIREMENTS
- Faxon will only refund products purchased directly through Faxon Firearms.
- If you purchased a product through one of Faxon’s authorized dealers and would like to return the product for a refund, you must contact the dealer for your refund.
- Merchandise must be in new condition with original packaging
- Merchandise must be return-shipped in a protective box
- A full refund including shipping if the return resulted from our error, otherwise we will deduct the shipping costs from the refund.
- All product replacements done under warranty can be handled by Faxon directly.
- The customer will receive a refund within 10 business days of our receiving your return. The refund issued in the same form of payment used for purchase.
- No return will be granted for a product that is modified in any way
- No returns for refund after 30 days from the delivery date of the product.
- There will be a 15% restocking fee on all returns.
Disclaimer: Manufacturer’s warranty is subject to change without prior notice.
Backed by KAK Industry Warranty!
KAK Industry Warranty Information
Our #1 priority is your 100% satisfaction. If any product you purchase from us ever fails to 100% meet or exceed your expectation, please contact us via telephone or EMAIL and we will attempt to resolve the situation to your satisfaction. If you need to return an item, returns are accepted subject to the following guidelines:
No Returns or Refunds are allowed after 30 days from Invoice Date.
- Shipping costs both ways are non-refundable. Orders that were shipped to you at no charge with a “Free Shipping” offer will have the cost of the original shipping deducted from the refund amount.
- New items that have been used may not be returned unless defective.
- Returns must include all accessories as shipped. Refunds will be adjusted for returns missing accessories, factory boxes, etc. or may be returned to the customer at the customer’s expense, at our option. If you are keeping or have lost some of the pieces, please don’t return the item.
- Items marked Closeout or Blem, as well as Special Orders may not be returned and their sale is final.
- Items that are Custom contract manufactured may not be returned and their sale is final unless defective
- Returned items may be subject to a restocking fee.
- Any damaged shipments must be reported to the carrier immediately for proper claim handling.
- All returns must be prepaid. Insurance on returns is at your option and at your expense and risk. COD returns will NOT be accepted and the package will be returned to you.
Contact Details
Address: 2241 Celsius Ave, Unit C, Oxnard, CA 93030
Telephone: 805-981-4734
Email: sales@kakindustry.com
Disclaimer: Manufacturer’s warranty is subject to change without prior notice.
Backed by the Sylvan Arms Warranty!
Sylvan Arms Warranty
We stand by our products!
If you are experiencing an issue with a Sylvan Arms product, please contact us at your earliest convenience so we can address the issue. Our goal is to make it work for you so please give us all details possible. Not every product is 100% compatible, with variations in build, but we will do our best to make it work with your components.
We have a 30-day hassle-free return policy. If you would like to make a return please request an RMA number from our customer service department. We reserve the right to deny return requests if the item has been intentionally damaged beyond repair.
Contact Details:
- Telephone: 888-256-5632
- Email: service@sylvanarms.com
Disclaimer: Manufacturer’s warranty is subject to change without prior notice.
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.










