BG Complete 10.5" 7.62 x 39 Upper Receiver - Black | A2 | 9" M-LOK | With BCG & CH

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Product Code: BG1057629A2-BLK
MSRP: $489.95
Sale Price: Sale Price: $327.95
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Builder's Grade Complete 10.5" 7.62 x 39 Upper Receiver | A2 | 9" M-LOK | With Bolt Carrier Group and Charging Handle

This Complete 10.5 inch M-LOK upper receiver comes with a 9 inch free float handguard and is built with only the best Mil-Spec components. The heart of this upper is comprised of a 4150 barrel and our black nitride bolt carrier group that is finished with an incredible polish, making the action smooth and easy to keep clean.

Caliber 7.62x39
Length 10.5"
Material 4150 Chrome Moly Vanadium
Profile Heavy
Finish Parkerized
Gas System Length Carbine
Gas Block Journal .750"
Dimpled? No
Twist Rate 1:7
Muzzle Thread 5/8x24
Weight 2.2lbs

Bolt Carrier Group:

    • .125" bolt face depth
    • Enhanced Firing Pin

    • Bolt Machined from 9310 tool steel
      • Heat treated to military specifications
      • Shot Peened
      • MPI
      • Black Nitride Finish
    • Extractor Heat treated to military specifications
      • Shot peened
      • Mil-Spec Extractor Spring, black extractor insert, Viton O-Ring
      • Black Nitride Finish
    • Cam pin Machined to Mil Spec
      • Ground to meet military required tolerances

Upper Receiver:

  • Machined from a Mil-Spec 7075 T6 forging Hard Coat Anodized per Mil-A-8625F, Type III
  • M4 Feed ramps
  • Made in the U.S.A.


  • 9" free float handguard
  • MIL-STD 1913 Picatinny rail on top
  • 3 M-Lok slots on 3 sides
  • Precision Machined Aircraft grade aluminum, for high strength and weight savings
  • Hard Coat Anodized per Mil-A-8625F, Type III, Class 2
  • Clamp on system for easy assembly
  • Steel Barrel nut to resist movement under heat
  • 10 oz with barrel nut and hardware
  • 1.35" Inside Diameter
  • 1.63" Wide
  • Made in USA

Charging Handle:

  • Alloy Charging Handle Assembly
  • Complete with Standard Latch
  • Made from hardcoat anodized aluminum
  • Black finish

Please Note: Uppers may present light fouling from our quality control process and/or test firing

***Please allow an additional 2-3 business days of lead time as these uppers are made to order.***