AT3™ .300BLK 16″ Assembled Forged Upper – 2A Basics ASAL 15″ Handguard – No BCG/Charging Handle

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SKU: AT3-ASAL-300-16-BLK

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Limited 1 Year Warranty
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AT3™ 300 BLK 16″ Assembled Forged Upper – 2A Basics ASAL 15″ Handguard – No BCG/Charging Handle

Built to Order – Ships Within 3 Business Days

This assembled upper delivers a full-length 300 BLK platform focused on versatility and value without breaking the bank. This is the foundation for shooters building a hunting rifle, suppressor host, or multi-purpose setup where you need the hard-hitting performance of 300 BLK with maximum velocity from a 16-inch barrel. The 15-inch 2A Basics ASAL handguard provides M-LOK mounting on all sides with a patent-pending Anti-Slip/Anti-Lift attachment system that ensures a rock-solid fit while keeping weight and cost down.

The AT3 16-inch medium profile barrel in 300 BLK features black nitride finish for durability and corrosion resistance, with a pistol-length gas system for reliable cycling with both supersonic and subsonic ammunition. The 1:7 twist rate stabilizes both light and heavy projectiles across the full range of 300 BLK loads. The 2A Basics ASAL handguard weighs just 10 ounces without mounting hardware and features M-LOK slots on all sides, anti-rotation tabs, and a shaved Picatinny top rail for weight savings while maintaining full functionality.

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 AT3 birdcage flash hider effectively reduces muzzle flash 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

  • 16-inch medium profile barrel with pistol-length gas system for reliable cycling
  • 4150 Chrome Moly Vanadium steel with black nitride finish
  • 1:7 twist rate stabilizes both light and heavy 300 BLK projectiles
  • 15-inch 2A Basics ASAL handguard with patent-pending Anti-Slip/Anti-Lift mounting system
  • M-LOK attachment slots on all sides for maximum modularity
  • Lightweight design at just 10 ounces without mounting hardware
  • Forged upper receiver with forward assist and dust cover installed
  • Birdcage flash hider reduces muzzle flash

Specifications

  • Brand: AT3 Tactical
  • Model: .300BLK 16″ Assembled Forged Upper – 2A Basics ASAL 15″ Handguard – No BCG/Charging Handle
  • MPN: AT3-ASAL-300-16-BLK
  • Caliber: 300 BLK
  • Barrel Length: 16 inches
  • Barrel Profile: Medium
  • Barrel Material: 4150 Chrome Moly Vanadium
  • Barrel Finish: Black nitride
  • Barrel Twist: 1:7
  • Barrel Weight: 29 ounces
  • Gas System: Pistol-length
  • Handguard Length: 15 inches
  • Handguard Type: M-LOK free-float
  • Handguard Material: 6061-T6 Aluminum
  • Handguard Weight: 10 ounces (12 ounces with mounting hardware)
  • Upper Receiver: Forged with forward assist and dust cover
  • Gas Block: .750 low-profile steel
  • Muzzle Device: Birdcage flash hider (5/8×24 thread)
  • Color: Black

What’s Included – Installed

Specifications:

ColorBlack, Flat Dark Earth, OD Green

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.

  • 2A Basics offers a limited 1 Year warranty against any defects from the manufacturing process. If your product is not usable, directly from the packaging, 2A Basics will replace or refund your items at no additional cost to you. 2A Basics reserves the right to withhold warranty support if product damage is deemed to be caused by the customer. Warranty expires 90 days after the verified purchase date.
  • If you need to replace an item, please contact  for assistance.
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