In 2007 Grand Power announced a deal to produce 100,000 units for the U.S. market in partnership with Texas-based handgun manufacturer STI International Inc.[1][2] The first pistols were exported in 2008.

On the K100, the Beretta's barrel extension cam cut, and transfer block's cam tooth, are replaced by a curled, twisting cut in the barrel extension, and a round, frame-embedded cross-pin respectively.

The design allows a low bore axis relative to the shooter's hand and avoids the use of the transfer/locking block typically found in rotating barrel pistols.

Both of the Berettas, and the K100, have the archetypal square shouldered lock protruding from the otherwise round barrel, easily visible at the ejection port with the slide fully forward.

This square shoulder is rotated in behind a solid column of steel running the length of the slide forward of the ejection port, and on the left side out of view, when the slide and barrel are fully forward in battery.

The thick walled barrel and other metal parts are treated by Tenifer QPQ technology.

The ergonomically shaped polymer grip frame houses a steel receiver which provides the rails the slide travels on as well as hardpoints required for the trigger mechanism.

Current production Grand Power pistols use a solid trigger guard and a new take down lever.

Using a direct blowback system rather than the rotary lock up, the rimfire barrels are dovetailed and pinned into the steel chassis.

Target - An adjustable-sight version of the K100 featuring a micrometric adjustable rear and fiber optic front sight.

X-Calibur - For 2012, a new model with a longer fluted bull barrel and scalloped slide was introduced.