I Built a Custom 9mm AR Pistol... Here's What Happened. (Angstadt Arms)
This custom Angstadt Arms AR-9 pistol build features a 6-inch barrel and Glock magazine compatibility. Key components include a Hiperfire 24C trigger, Strike Industries controls, and a Vortex Razor red dot. Reliability testing highlighted the superiority of OEM Glock magazines over aftermarket options for this specific platform, with the last-round bolt hold-open functioning correctly.













