BG 7.5" 5.56 Upper Receiver - Black | A2 | 7" M-LOK Slant Cut | Without BCG & CH

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Product Code: BGBU-755567SL-BLK
List Price: $378.95
MSRP: $378.95
Sale Price: Sale Price: $149.95
Savings: $229.00
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Builder's Grade 7.5" 5.56 Upper Receiver | A2 | 7" M-LOK Slant Cut | Without Bolt Carrier Group and Charging Handle

This Barreled 7.5 inch M-LOK upper receiver comes with a 7 inch free float slant cut handguard and is built with only the best Mil-Spec components. The heart of this upper is comprised of a precision 4150 Chrome Moly Vanadium barrel.

Caliber 5.56
Length 7.5
Material 4150 Chrome Moly Vanadium
Profile Medium
Finish QPQ Corrosion Resistant
Gas System Length Pistol
Gas Block Journal .750"
Dimpled? No
Twist Rate 1:7
Muzzle Thread 1/2x28 TPI
Weight 16.8oz
Barrel Extension M4 Feed Ramps
Target Crown 11 Degree


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.


  • 7" 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
  • 8.9 oz with barrel nut and hardware
  • 1.35" Inside Diameter
  • 1.63" Wide
  • Made in USA


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.***