Pistol Build Kit - BG Complete 7.5" 5.56 Upper Receiver | 7" Slant Cut HG |Pistol Brace & Buffer Tube Kit | BN LPK

Rating: Total Reviews: 0 Write a Review
List Price: $499.95
MSRP: $499.95
Sale Price: Sale Price: $275.95
Savings: $224.00
Click for Price

Pistol Build Kit - 5.56 | Builder's Grade Complete 7.5" Upper Receiver with A2 | Pistol Stabilizer Brace and Buffer Tube Kit | Bare Necessities Lower Parts Kit

BG Complete 7.5" 5.56 Upper Receiver - Black | A2 | 7" Slant Cut M-LOK | With BCG & CH:

This Complete 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 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 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

Bolt Carrier Group:

  • Enhanced 9310 Steel (Bolt)
  • 8620 Tool Steel (Carrier)
  • Bolt is shot Peened and MPI
  • All BCG components are pre-polished before being processed and then post polished for an incredible shine

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

Charging Handle:

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

Pistol Stabilizer Brace and Buffer Tube Kit:

Constructed from high-strength polymer, this brace offers lightweight durability, ensuring resilience without compromising maneuverability. Weighing just 5.12 oz, it provides enhanced stability without adding unnecessary bulk to your pistol.

Featuring a built-in sling mount with a convenient sling loop, this brace offers versatile sling attachment options, allowing you to customize your setup for optimal comfort and functionality.

Designed specifically for pistol buffer tubes, the Polymer Stabilizing Brace-Black seamlessly integrates with your firearm, providing a secure fit and reliable performance in any shooting scenario.

While not adjustable, its ergonomic design ensures a comfortable shooting experience, while its sleek black finish adds a touch of sophistication to your pistol setup.

Buffer Tube Features:

  • 1.25" OD Receiver Extension Tube Compatible with AR15 Lower Receivers
  • Precision Machined from Aircraft Grade Aluminum
  • Comes Complete with Carbine Buffer, Buffer Spring, Castle Nut, and End Plate


Bare Necessities Complete AR15 LPK:

This BN Lower Parts Kit is what you need to build a custom AR15 from the ground up. Mil-spec dimensions and coating ensure the highest quality and correct component interface.

  • Safety Selector
  • Selector Spring
  • Selector Detent
  • Magazine Catch
  • Magazine Catch Spring
  • Aluminum Magazine Catch Button
  • Bolt Catch
  • Bolt Catch Detent
  • Bolt Catch Spring
  • Bolt Catch Roll Pin
  • Take Down Pin Take Down Detent
  • Take Down Detent Spring
  • Front Pivot Pin
  • Front Pivot Pin Detent
  • Front Pivot Pin Detent Spring
  • Trigger Guard
  • Trigger Guard Roll Pin
  • Buffer Retainer Detent
  • Buffer Retainer Spring
  • A2 Pistol Grip
  • Pistol Grip Screw
  • Pistol Grip Lock Washer
  • Trigger
  • Trigger Spring
  • Hammer
  • Hammer Spring
  • Disconnector
  • Disconnector Spring
  • Hammer Pin & Trigger Pin

***Disclaimer: This made-to-order product may include minor component substitutions of military-specification quality or better. These changes, potentially differing cosmetically from shown images, ensure enhanced quality and performance. This may include ambidextrous sling loop endplates or an upgraded extra power spring.

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.***

All NFA/ATF Rules Apply

Depending on your state and local laws, you could use this barrel with a lower receiver that is a Registered SBR, or Pistol. Possession of this barrel along with a Non-NFA lower receiver may be Prohibited. We are not lawyers and the above information is not legal advise. Make sure you understand the most up to date federal, state and local laws before proceeding with this product.