The P11 was designed by
Swedish-born George Kellgren, the designer of many earlier
Husqvarna (Sweden),
Intratec, and
Grendel brand firearms. The P11 used an aluminum receiver inside a polymer grip housing held on with polymer pins. The slide, barrel, and magazine were steel. The standard magazine held 10 rounds. At unloaded, the handgun itself was comparatively light. The P11 lacked an external manual safety, relying instead on a long and heavy
double action only trigger pull, which requires 9 pounds of pressure, to prevent accidental discharge. A firing pin spring and low-mass hammer prevented discharge if the gun was dropped. The P11 would also accept some
Smith & Wesson 59 series magazines. An adapter was available that would wrap around the base of 15-round Smith & Wesson model 59-style magazines. Smith & Wesson series 69 compact 12-round magazines would also work, with a matching short adapter sleeve, as well. Accessories such as trigger shoes, finger-rests, belt clips, steel guide rods to replace the factory installed polymer guide rod, gray- and OD green-colored polymer grip housings, night sights, and other accessories are also available from the manufacturer. ==Variants==