The Grand Power series of pistols is an interesting amalgam of modern pistol design. It starts with a CNC-machined steel chassis that is enclosed by an ergonomic polymer frame for strength, comfort, and control. There is built-in Picatinny railing at the front of the receiver for mounting lights and/or laser sights. The steel slide is finished “black” according to the product info and has cocking serrations front and rear.
The Grand Power XCalibur is built in an ISO 9001 compliant factory with 4 and 5 axis CNC machines shaping parts to within +/-.005mm (that’s 0.000196”!). For reference that’s about 1/10 the thickness of a standard sheet of paper!
It shares the rotating barrel arrangement in common with the Beretta PX4s. Same concept, different execution...and one that to my eye, looks like it might be smoother in action and generate less potential friction. I think that's neither here nor there, for the most part, but *might*, or *could* be a factor in longer term use with high round counts. Still, i think both should be long-term reliable with cleaning and lubing as expected. Just calling out the design is different.