I was browsing the website for the Indian Ordnance factory earlier today.
They make a very interesting range of arms and ammunition, and everything is listed on their website. It is unclear whether they are actively manufacturing everything, or can do so if a customer orders.
I noticed that they make a version of the INSAS rifle chambered for a 5.56 x 30mm Cartridge known as the MINSAS. I had never heard of this calibre before, but it seems that there is a wikipedia page on it. This page claims that the calibe is based on the 5.56 x 30 MARS.
Has anyone ever seen an example or a photo of one? I would like to know what the headstamp is.