Also noteworthy for European pocket pistols are the Mauser Model 1910 and Mauser Model 1914, chambered for .25 ACP and .32 ACP respectively, both of blowback and hammerless design, which were very popular as civilian small handguns. The .32ACP version was considered powerful enough for the Kriegsmarine as well as security forces of the Third Reich, and reworked as the Mauser Model 1934, with only minor modifications. The Mauser HSC, produced during the war in .32 ACP for the Navy and later police and army units, saw substantial production and sales after the war (upgraded to .380 ACP), and was successfully introduced to the US market.