Details
Mockingbird Gen 2 9MM Full Build Kit
The Mockingbird Gen 2 is a complete 9MM AR-9 build kit designed for shooters who want a compact, modular platform in a proven caliber. This full build kit includes everything except the lower receiver: a 6-inch nitride barrel, billet aluminum upper, M-LOK handguard, 9MM bolt carrier group, charging handle, Shockwave Blade brace, lower parts kit, buffer tube, buffer, recoil spring, end plate, and castle nut. The design supports Glock and Colt magazine compatibility, making ammunition and accessories accessible and affordable.
Key Features
- 6-inch 4150 CrMoV nitride barrel with 1:10 twist rate and 1/2x28 thread pitch
- Billet aluminum upper receiver with Type III hard coat anodize finish
- 4-inch M-LOK free-float handguard for accessory mounting
- 9MM nitride bolt carrier group with external extractor for reliable cycling
- Shockwave Blade pistol brace for stable handling
- Glock and Colt magazine compatible
- Complete mil-spec lower parts kit included
- AR-15 M4 charging handle
Perfect For
- Shooters building their first 9MM AR platform
- Compact pistol caliber carbine enthusiasts
- Builders seeking an affordable, modular 9MM system
- Shooters who prefer Glock magazine compatibility
- Budget conscious builders wanting complete component integration
Design Intent
The Mockingbird Gen 2 balances compact size with practical functionality. The 6-inch barrel provides velocity and handling efficiency in a pistol caliber platform, while the billet aluminum upper receiver delivers durability and precision. The M-LOK handguard allows customization without adding unnecessary weight, and the nitride finish on both barrel and bolt carrier group ensures corrosion resistance and longevity. This kit prioritizes reliability over complexity.
Magazine Compatibility and Platform Advantage
The 9MM bolt carrier group uses an external extractor design that cycles both Glock and Colt magazines reliably. This compatibility matters because it gives you access to affordable, widely available ammunition and magazines. The platform accepts standard AR-15 controls and ergonomics, so if you've built or shot an AR-15, the Mockingbird operates identically. No learning curve, no special tools, no proprietary parts.
Included Components Breakdown
This full build kit includes the upper assembly, bolt carrier group, charging handle, lower parts kit, buffer tube, buffer, recoil spring, end plate, and castle nut. The lower receiver is not included. Once you source a stripped lower receiver and install these components, you'll have a functional 9MM AR platform ready for ammunition testing and range work.
Shockwave Blade Brace Configuration
The Shockwave Blade pistol arm stabilizer brace is included and BATF approved. The brace provides a stable wrist support surface while maintaining the firearm's classification as a pistol under current federal law. This configuration is setup dependent and remains compliant as long as you follow manufacturer guidelines and applicable laws in your jurisdiction.
Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. Lower receiver not included. Verify magazine compatibility with your specific lower receiver before assembly.
