The M15a1 was another A/A version of the M3 half track but over shadowed by the more famous M16.
It saw service in NWE and the Pacific and was an improved version of the m15 which
had 1 x 37mm and 2 .50cal hmg’s.
It also saw service in Korea alongside the M16.
This kit was designed for the PSC model but may fit others.