TANDEMKROSS Ultimate Trigger Kit (Ruger Mark IV)

The TANDEMKROSS Ultimate Trigger Kit is the flat-face alternative to the Volquartsen Accurizing Kit, and like Volquartsen's kit it fits every Ruger Mark IV variant. It ships a skeletonized flat-faced aluminum trigger shoe with pre- and post-travel adjustment screws, backed by a lightweight hammer, radiused sear, and the Blast Shield magazine disconnect that ships with the full kit. Pull weight drops to about 2 to 2.5 lb, which is competition-grade for a rimfire pistol.

Installation is drop-in. The kit replaces the factory trigger and supporting fire-control parts; total install time runs under 10 minutes once the gun is field-stripped. The flat trigger face improves consistency for shooters who index the trigger off the front face of the shoe rather than curling around a curved factory shoe. Black and red anodize options are functionally identical; pick by build aesthetic.

This is the trigger most TANDEMKROSS-loyal Mark IV owners run, and the trigger most steel-challenge Mark IV builds ship with. Steel-frame Mark IV Target, Hunter, and Competition owners get the same drop-in kit as the 22/45 crowd; the choice between this and the Volquartsen Accurizing Kit comes down to flat-face versus curved-shoe preference, not fitment.