S.2605 - Federal Government - A bill to require certain semiautomatic pistols manufactured, imported, or sold by Federal firearms licensees to be capable of microstamping ammunition.

Amends the federal criminal code to prohibit firearm licensees from manufacturing, importing, or transferring a semiautomatic pistol that is not capable of microstamping ammunition. Deems a pistol capable of microstamping ammunition if: (1) a microscopic array of characters that identify the make, model and serial number of the pistol is etched into the breech face and firing pin of the pistol; and (2) when ammunition is fired from the pistol, the characters are copied from the breech face and firing pin onto the cartridge case of the ammunition.