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AT3™ Assembled Pistol Upper for AR-15 – 5.56 NATO – 10.5″ Barrel – 12″ Handguard – No BCG/CH – 3 Colors

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AT3™ Assembled Pistol Upper for AR-15 – 10.5″ 5.56 NATO Barrel with 12″ SPEAR M-LOK Handguard

Built to Order – Ships Within 3 Business Days

This assembled upper delivers a compact, hard-hitting platform for AR pistol builds and SBR conversions. This is the foundation for shooters building a maneuverable home defense weapon, a truck gun, or a compact range blaster where you need something short but still want the reliability out of a 5.56. The extra handguard length over the barrel gives you flexibility for hand placement and accessory mounting without worrying about heat or blast.

The 10.5-inch government profile barrel in 5.56 NATO pairs with a carbine-length gas system for reliable cycling with a wide range of ammunition, while the 12-inch SPEAR free-float handguard provides ample real estate for lights, lasers, and grips without adding bulk.

Built on AT3’s slick side billet upper receiver with a low-profile .750 steel gas block and stainless gas tube, this setup is ready to run once you add your choice of bolt carrier group and charging handle. The KAK Slimline flash can redirects concussion forward and gives the muzzle a clean, finished look.

Note: Does not include bolt carrier group or charging handle. The upper is shipped fully assembled.

Features

10.5-inch government profile barrel with carbine-length gas system
12-inch SPEAR M-LOK free-float handguard for accessory mounting
Slick side billet upper receiver for clean lines
Low-profile .750 steel gas block and stainless steel gas tube
KAK Slimline flash can redirects muzzle blast forward
Available in Black, Flat Dark Earth, and OD Green

Specifications

Brand: AT3 Tactical
Model: Assembled Pistol Upper for AR-15 – 5.56 NATO – 10.5″ Barrel – 12″ Handguard – No BCG/CH
MPN: FFML-P-SPEAR-105-6
Caliber: 5.56 NATO
Barrel Length: 10.5 inches
Barrel Profile: Government
Gas System: Carbine length
Handguard Length: 12 inches
Handguard Type: M-LOK free-float
Upper Receiver: Slick side billet
Gas Block: .750 low-profile steel
Muzzle Device: KAK 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

What’s Included – Installed

1x Assembled Upper Receiver
1x 12″ SPEAR M-LOK handguard
1x 10.5″ 5.56 NATO Government Profile Barrel
1x KAK Slimline Flash Can
1x 1/2″ Crush Washer
1x Carbine-Length Gas Tube
1x Low-Profile Gas 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.

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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