AR-15 5.56 Nato 7.5" Pistol Build Kit (Unassembled) - Black
Sale

AR-15 5.56 Nato 7.5" Pistol Build Kit (Unassembled) - Black

Shooters Gate
SKU:
AR-BDKT-U556-7.5P7P-M7-BLK
$455.99 $246.19
(5 reviews)
Weight:
6.00 LBS
Current Stock:
198
Adding to cart… The item has been added
Description
- OVERVIEW -
The Shooters Gate AR-15 Unassembled Build Kit provides a solid Mil-Spec foundation for a dependable 300 Blackout build. It includes a Stripped upper receiver, a 7.5” 300 Blackout barrel with a mid-length gas system (twist varies depending on the barrel), and a Black 7” free-float M-LOK handguard for stability and accessory mounting.

The kit also features a Bolt Carrier Group, made in the USA, standard charging handle, complete lower parts kit, and a Pistol buffer tube assembly. Bonus tools—an armorer’s wrench, gun mat, and sling—are included to support assembly. Only a stripped lower receiver and magazine are required to complete the build.
Show More ▼

Upper Assembly

Upper Receiver
Stripped upper receiver
Barrel
7.5” 300 Blackout barrel
(twist varies depending on the barrel)
Dust Cover & Forward Assist
  • Black dust cover
  • Black forward assist
Gas System
  • Gas Block (diameter varies depending on the barrel)
  • Gas Tube (length varies depending on the barrel)
Muzzle Device
A2 Bird Cage Flash Hider with crush washer
Handguard
Black M-LOK Free Float Handguard
For 7.5” Uppers there will be a 7” handguard
BCG & Charging Handle
  • Bolt Carrier Group, made in the USA
  • Black standard charging handle

Buffer System

Included Parts
Pistol Buffer Tube Buffer Spring Buffer Castle Nut End Plate

Lower Parts Kit

Included Parts
Safety Selector Safety Detent Safety Detent Spring Trigger Guard Trigger Guard Roll Pin Pistol Grip Washer Pistol Grip Screw Buffer Retainer Retaining Spring Mag Release Mag Release Button Mag Release Spring Takedown Pins (x2) Takedown Springs (x2) Takedown Detents (x2) Hammer Spring Hammer Pin Trigger Spring Trigger Pin Bolt Catch Bolt Catch Plunger Bolt Catch Spring Bolt Catch Roll Pin Disconnector Disconnector Spring Trigger Guard Screws Trigger Hammer AR-15 Pistol Grip

To Complete Your Build

What You Still Need
  • AR-15 Stripped Lower Receiver (FFL & Background Check required)
  • Magazine suitable for your desired caliber
⚠ WARNING: This product can expose you to chemicals such as lead and other petroleum products which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov

Reviews

  • 5
    Third Time Ordering

    Posted by Brian K. on Mar 16th 2026

    This is my third time ordering, and I went with the AR-15 5.56 Nato 7.5" kit this time. Everything has been good each time, and that’s why I keep coming back.

  • 5
    Nice quality

    Posted by Chris on Mar 15th 2026

    Great kit, went together well. I was really impressed with the quality I received on this on.

  • 5
    Good product

    Posted by paladin on Mar 15th 2026

    Most of the parts are pretty good but I do have an issue with the Handguard

  • 5
    Ar pistol kit

    Posted by Robert Greer on Jan 23rd 2026

    Excellent will definitely buy again

  • 5
    Great

    Posted by Mike on Jan 4th 2026

    Matched this kit to lower. Absolutely no complaints. Very quick assembly and at the range the next day.