The Custom utilizes a single full-length guide rod, necessitating the serrations on the front of the slide for press checks.

[2] Unlike the standard Custom, it comes with tritium bar-dot night sights and 30 lines per inch frontstrap checkering.

These pistols have an ambidextrous thumb safety, a lanyard loop, an internal extractor, and, in contrast to other Custom models, a standard length recoil spring guide rod to allow easier field stripping without tools.

[5][6] The ICQB pistol is fitted with a screw-on Dawson Precision light rail, Novak LoMount tritium night sights, and brown Simonich Gunner grips.

The guns were delivered to MARSOC equipped with SureFire integrated military pistol lights, Gemtech TRL tactical retention lanyards, and Wilson Combat 7- or 8-round magazines.