Details
Cold Vow w/Gauntlet Arms Brace 7.5-inch AR-15 9MM Pistol Full Build Kit
This is a complete 9MM AR-15 pistol build kit designed for shooters who want a compact, magazine-fed platform in a shorter format. The kit includes everything except the lower receiver, featuring a billet aluminum upper, 7.5-inch 4150 CrMoV barrel, and M-LOK handguard paired with a Gauntlet Arms stabilizing brace for controlled shooting. The 9MM nitride bolt carrier group accepts both Glock and Colt magazines, giving you flexibility in ammunition sourcing and magazine compatibility.
Key Features
- Billet aluminum upper receiver with Type III hard coat anodized finish for durability and corrosion resistance
- 7.5-inch 4150 CrMoV barrel with 1:10 twist rate, phosphate finish, and 1/2x36 thread pitch
- 9MM nitride bolt carrier group with external extractor, compatible with Glock and Colt magazines
- M-LOK free-float handguard in 6061-T6 aluminum for accessory mounting and consistent accuracy
- Gauntlet Arms polymer stabilizing brace for improved control and handling
- 9mm flash hider A2 bird cage muzzle device
- 5.50 oz buffer system tuned for 9MM cycling
- Lower receiver not included
- BCG and charging handle are not included
Perfect For
- Shooters building a compact 9MM pistol platform for home defense or range use
- Builders seeking a complete upper assembly with brace-ready configuration
- Those who prefer Glock or Colt magazine compatibility in an AR platform
- Shooters wanting a shorter sight radius and reduced overall length
Billet Upper Receiver Design
The Vertex enhanced billet upper receiver is machined from 6061-T6 aluminum and finished with Type III hard coat anodizing. This construction method provides tight tolerances and a rigid platform for the barrel and bolt carrier group. Billet uppers are manufactured through CNC machining rather than forging, allowing for more precise geometry and enhanced durability. The upper receiver interfaces directly with your lower receiver and houses the barrel, bolt carrier group, and charging handle as a complete assembly.
9MM Caliber Advantages
Running 9MM in an AR platform offers several practical benefits. The round is widely available, generally affordable, and produces lower recoil than centerfire rifle cartridges. The nitride bolt carrier group in this kit is specifically designed for 9MM pressure curves and accepts both Glock and Colt magazines, which expands your ammunition and magazine sourcing options considerably. The 7.5-inch barrel length is optimized for 9MM velocity and handling in a compact form factor.
Gauntlet Arms Brace Configuration
The Gauntlet Arms polymer stabilizing brace provides a control point for your shooting hand and improves stability during operation. This brace is designed to attach to the buffer tube on your completed lower receiver. The brace does not convert this platform to a short-barreled rifle when used as designed. Ensure you understand the current legal status of stabilizing braces in your jurisdiction before completing your build.
Complete Kit Component Breakdown
This full build kit includes the upper assembly, bolt carrier group, charging handle, buffer tube, buffer, recoil spring, end plate, castle nut, and lower parts kit. You will need to source a serialized lower receiver separately to complete the build. The kit provides all other components required to assemble a functional 9MM pistol platform.
Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Ships with a stabilizing brace. Do not attach a stock unless compliant with applicable laws. Lower receiver not included. BCG and charging handle are not included.
