The M19 is a handgun that appears in the Resident Evil 2 remake.
Inside the Guardroom, only obtainable in the [2nd] scenario as Leon.
"7-shot, large caliber, single-action handgun that fires .45 ACP rounds. Its base design hasn't changed in over 70 years so variants abound."
Leon holds this weapon with one hand and rotated roughly 45 degrees counter-clockwise, which can disorient unsavy players as the recoil likewise jolts in said angle instead of vertically. While each shot packs more power than the Matilda, it is not upgradeable and must be reloaded more frequently due to its 7-round capacity. Comparatively, it has better ciritcal headshot chance than Claire's .45 gun counterpart, similar to that of Samurai Edge Wesker Model albeit with the aforementioned extra firepower per shot.