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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

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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

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.

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.

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