Product Code: 5D-16-762-HB-P-12MLK

16" AR-15 7.62x39 Upper - Parkerized Heavy Barrel, 1:10 Twist, 12" M-LOK Rail


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5D Tactical is proud to present our premium yet budget-conscious complete AR-15 16" upper assembly. Crafted in-house, our seasoned builders bring over 40 years of expertise to each M4 upper receiver. Every barrel benefits from a thorough visual inspection and cleaning before assembly. We ensure that all barrel nuts meet the stringent Mil-Spec standards, being torqued to exact specifications. And, before any upper receiver ships out, it is meticulously QC inspected and its headspace is rigorously verified. With 5D Tactical, quality meets affordability.


This is a perfect option for builders who want to have a free floating handguard from the get-go to take advantage of its lightweight and modular M-LOK rail for use with accessories such as flip-up sights, optics, or tactical lights. 


  • Barrel length - 16"
  • Twist Rate - 1:10
  • Caliber - 7.62 x39mm
  • Barrel Profile - Heavy Barrel
  • Barrel Type - 4150 Chrome Moly Vanadium - Parkerized Finish
  • Gas System - Carbine Length, .750" diameter steel micro gas block
  • Handguard - 12" M-LOK
  • Forward Assist and Dust Cover installed
  • Muzzle Device - A2 Style Birdcade or Compact Muzzle Brake
  • MIL-A-8625 Type III Class 2 Black Hardcoat Anodized
  • Bolt Carrier Group & Charging Handle included 

As completed upper receiver assemblies are not considered firearms, no FFL is required. This will ship directly to your home.

*Buyer is responsible for configuring finished rifle build in accordance with their local and state laws.