Kit Preview : 1/76 US Casts BM13 Katyusha rocket launcher on Studebaker US6 truck
About the manufacturer
All I know is that US Casts is no longer in activity.
About the vehicle
Wikipedia article on the Katyusha
About the kit
The Studebaker cab and chassis are OK but the rocket launcher is a disappointment. The rails are misshapen and better replaced with H rods. Drilling all the holes will be quite a challenge. Unless there were several rocket sizes, according to the above referenced Wikipedia article M13 rockets are 180cm long, which makes those provided in this kit 2mm too short.