Troy A3 16 Inch Complete 5.56 NATO M-LOK Upper Receiver


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Troy Complete Complete Upper with Free Float M-LOK Handguard

Troy Industries is known for producing equipment made for the pros – and this complete upper is no different. This complete package comes ready to drop in on a lower receiver, with included bolt carrier and charging handle. This upper features a 16 inch midlength barrel for smooth recoil, and a free-float handguard that can support lights, lasers, bipods, and your favorite M-LOK foregrips.

Beyond that, this upper is optics-ready, so you can drop in a scope, red dot sight, or both to make this rock-solid package ready to put groups downrange.


  • Forged 7075 T6 Aluminum Upper with M4 feedramps
  • Government Profile Midlength Barrel
  • 13 Inch Troy M-LOK BattleRail with Steel Barrel Nut
  • T-Markings on Receiver
  • Includes Bolt Carrier Group and Charging Handle
  • Full top rail with 7 sides of M-LOK Slots
  • A2 Flash Hider


  • Caliber: 5.56 NATO
  • Barrel Length: 16″
  • Barrel Twist: 1/7
  • Gas System: Midlength
  • Muzzle Threads: 1/2×28
  • Gas Block Diameter: .750″
  • Overall Length: 24.5″

Have Questions About this Product?

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.

Troy Warranty

If your product is in need of warranty service, please contact Troy for more information to start the process.

Return Warranty of Defective Products:

  • All Troy products are manufactured in the USA using the finest quality materials.
  • All Troy products are warranted against defects in material and workmanship.
  • Troy will repair or replace a defective product (or part/component).
  • This warranty is limited to repair or replacement of the defective product, part, or component.
  • Troy will determine in its sole and exclusive discretion whether to repair or replace a product, part, or component.
  • Troy also reserves the right to determine the means and materials by which such repair or replacement will be made.
  • All defective product returns must be pre-authorized by Troy customer service and be accompanied by an RMA Number.
  • You must contact customer service to receive an RMA Number prior to returning any product.
  • You must have your original purchase paperwork, including your receipt or other proof of purchase, and be willing to provide these documents to Troy.
  • This warranty and return of defective goods policy applies to all purchasers, including but not limited to dealers, distributors, and retail customers.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.