AT3™ Assembled Forged Pistol Upper for AR-15 - 5.56 NATO - 10.5" Barrel - 12" Handguard - No BCG/CH - 3 Colors
or 4 interest-free payments of $103.00 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
Product description
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 forged upper receiver with forward assist and dust cover installed, this setup pairs a low-profile .750 steel gas block and stainless gas tube for reliable function. 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
- Forged upper receiver with forward assist and dust cover installed
- 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 Forged Pistol Upper for AR-15 – 5.56 NATO – 10.5″ Barrel – 12″ Handguard – No BCG/CH
- MPN: FFML-FOR-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: Forged with forward assist and dust cover
- 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
- 1x Forward Assist
- 1x Dust Cover
All 3 options on this page
- AT3™ Assembled Forged Pistol Upper for AR-15 - 5.56 NATO - 10.5" Barrel - 12" Handguard - No BCG/CH - 3 Colors - Color: Black | SKU: FFML-FOR-P-SPEAR-105-6-BLK
- AT3™ Assembled Forged Pistol Upper for AR-15 - 5.56 NATO - 10.5" Barrel - 12" Handguard - No BCG/CH - 3 Colors - Color: Flat Dark Earth | SKU: FFML-FOR-P-SPEAR-105-6-FDE
- AT3™ Assembled Forged Pistol Upper for AR-15 - 5.56 NATO - 10.5" Barrel - 12" Handguard - No BCG/CH - 3 Colors - Color: OD Green | SKU: FFML-FOR-P-SPEAR-105-6-ODG
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Questions & Answers
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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.
