WIST-94 was designed at Military Institute of Armament Technology (WITU) under the code name Piryt (Pyrite in Polish).

B01 was the only one to complete testing but the development was temporarily halted due to the military cutting off funding.

After racking the slide back and after each shot fired the striker is held semi-cocked allowing for lighter trigger pull than conventional double-action.

[3] However, field service in difficult conditions caused critical opinions about the pistol, connected mostly with jams, malfunctions and complicated dismantling.

[3] Therefore, the Army ceased to buy it, and from 2010 the manufactured weapons are modified with new frame with Picatinny rail.