Initially some manufacturing equipment was not available. This caused Remington Rand to acquire parts from other sources to complete the early pistols. They purchased barrels from High Standard, Colt, and Springfield Armory; Disconnectors from US&S; Grips safeties from Colt; and Slide stops from Colt and Springfield Armory (2,865 left over from WWI). Remington Rand "C" Division inherited much of the documentation, tooling, and machinery that originally was used by The Singer Manufacturing Co. in their Educational Order. Consequently some of the parts of the early pistols were made using Singer supplied tooling and fixtures. Careful examination of Early Remington Rand pistols will reveal striking similarities in some of the parts to Singer made parts such as the triggers and mainspring housings. The first 255 production pistols where accepted by ordinance inspectors in November of 1942.