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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This is a perfection 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. 


A quality and budget friendly complete AR-15 16" upper assembly brought to you by 5D Tactical. These M4 upper receivers are built in-house by expert builders with over 40 years of experience. Each barrel is visually inspected and cleaned prior to assembly. All barrel nuts are torqued to proper specifications per Mil-Spec standards and practices. Every complete M4 upper assembly is QC inspected and headspace checked before shipment. As completed M4 carbine upper receiver assemblies are not considered firearms, no FFL is required. Ships directly to your home.

  • 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
  • BCG/Charging Handle not included - Selection Options to Add
  • MIL-A-8625 Type III Class 2 Black Hardcoat Anodized

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