Modifications:
* Caliber: Becomes [[.460 Rowland]].
== Trivia ==
* Technically speaking, the Mark 23 and the USP .45 were not originally the same. Although they use otherwise identical magazine bodies, original USP .45 magazines employ shorter feed lips, whereas Mark 23 magazines used longer ones. However, the long model functions in both pistols - all USP .45 magazines in the Mazes are long feed-lip models for logistical simplicity. Note that the magazine floor plates are also different between the USP and the Mark 23, although this does not impede function; the floor plates only differ aesthetically to match each pistol's slightly different frames.
[[Category:Class 3 weapons]]