Uncommon in pistols, it offers two distinct but interchangeable trigger systems:[5]
A double-action-only (DAO) firing mechanism, which also has a magazine lock and is aimed at sales to California and Massachusetts. This magazine lock also causes the magazine to not drop free when you depress the release button.[6]
Bill of Rights Scrip on FMK 91c slideSubscrip on FMK slide serrations.
A single-action-only (SAO) firing mechanism, which is named Fast Action Trigger (FAT) by the manufacturer. There has been different versions of this trigger,[7] the current one is identified by the number 804 engraved on its left side.
Some of the 2nd generation of the pistol have the bill of rights engraved on the slide. The 9C1 pistol is made in California and is approved for sale in California. This handgun is not designed to use +P ammunition or low quality reloaded ammunition.