Combining a machined aluminum frame with rubber grips (the units in the photos are prototypes), Matrix Arms has put a unique spin on the popular GLOCK-compatible pistol category with their MX19 and MX19 Elite.
Stainless steel slide rails and locking places are bolted into the frame.
Both frame and slide are compatible with GLOCK Gen 3 components, but the MX19 is a complete pistol so you won’t be short any pieces. However, Matrix Arms does sell stripped slides and other components.
Nice little magwell flare machined into the frame and a standard dimension M1913 Picatinny accessory rail up front.
Slides with different cuts and serrations are available. Optics-ready, too.