Matrix Arms MX19 9mm Compact Striker-Fired Pistol — 4 in Barrel, Billet 7075-T6 Aluminum Frame, Two-Tone Finish, Optics-Ready, 15+1
The Matrix Arms MX19 is a compact, U.S.-made 9mm that pairs a billet 7075-T6 aluminum frame with a steel, optics-ready slide. It features an RMR/ACRO adapter plate installed, aggressive lightening windows, and rear chevron serrations. Glock 19-pattern Gen3 compatibility, a proprietary recoil-buffer system, and modular grip panels make this recent-release MX19 a standout for buyers who value smart engineering and parts ecosystem flexibility.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Light handling marks are present from prior use. See photos for close-ups.
What's Included
- 2x 15-round Magpul PMAG GL9 polymer magazines
- RMR/ACRO adapter plate installed on slide
- 2x individual Matrix Arms MX19 replacement polymer grip panels (one black, one tan; same-side panels, not a complete left/right set)
The MX19 uses a billet 7075-T6 aluminum frame in a light metallic tan/bronze finish, matched to a dark steel slide for a purposeful two-tone look. Frame and slide markings include "MATRIX ARMS" and "MATRIX ARMS MX 19 9MM LUGER," with "CLAREMONT, NH USA" on the frame.
The slide is cut with triangular/diamond lightening windows and rear chevron-style cocking serrations for confident manipulation. An optics interface is present, and this pistol includes an RMR/ACRO-marked adapter plate already installed. Sight configuration may vary.
Ergonomics are anchored by a 1911-influenced grip angle and modular textured grip panels with Matrix "M" medallions. A flat-faced trigger with a red safety blade and a trigger safety system provide a modern, striker-fired control setup. The dustcover incorporates a Picatinny-type accessory rail.
Chambered in 9mm Luger with an approximately 4 in barrel, the MX19 offers a 15+1 capacity. It accepts Glock 19-pattern Gen3 slides/parts/magazines and uses a proprietary recoil-buffer system. This example ships with two 15-round Magpul PMAG GL9 magazines and two individual replacement grip panels—one black and one tan—both for the same side (not a complete left/right set).