This item is in the category Sporting Goods\Hunting\Gun Parts\Pistol. Glock 23 s&w. 40 cal upper slide lower parts 1 magazine kit new build oem 10-rd the seller is snowduster1 and is located in san jose, california. Confirmed with Glock USA that this is gen3 factory model. Pressed markings at factory for contract run of 23s.