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.