So, funny thing about India: their military industrial complex is (SHOCKER!) absolute garbage. Most of their military equipment and weapons are a mix former Soviet/Russian and NATO/European. However, in the late 70s and early 80s they decided that they wanted to develop a native design to replace their domestically made L1A1 FAL rifles. Thus was born the INSAS rifle, which officially was their standard issue military rifle, but never 100% replaced the L1A1.
Now keep in mind that semi-auto/full-auto/select fire firearms are a fairly established technology. Reliable self-loading firearms have been around for over 100 years, and most industrialized nations with a weapons industry have been able to design and manufacture a serviceable military rifle at some point. Even the Chinese have been able to do it. Not the Indians.
The INSAS is basically what you get when a beat-up old Kalashnikov and a poorly built, out of spec FAL have an out of control drug and alcohol binge, fuck, get pregnant, DON'T quit the booze and drugs, and then are able to carry the baby long enough to give birth. Sure, the baby was born six weeks premature, has several deformities and developmental complications, and was born addicted to Crack AND Skag...but it was born. They've been trying to get the INSAS to a level at least on par with Russian designs (forget Western designs LOL) for over thirty fucking years, and it still sucks. Fit and finish problems, reliability issues, the polymer magazines crack open when they're too cold, they require modifications to accept modern optics and accessories...they can't even compete with old AKMs or AK-74s that have been updated with modern furniture.
So the INSAS is being replaced with AK-203s and SIG 716s. The INSAS will be filtered down to police departments as they get replaced, to replace Ishapore 2A1s (a locally made variant of the British Short Magazine Lee-Enfield bolt-action rifle) currently in use by police in India.
And it's much the same with the rest of the Indian MIC. Every time they try to develop a natively designed system, be it a rifle, a tank, or a fighter jet, it ends up hilariously bad and nowhere near the quality of "comparable" weapons systems from other "peer" countries. They're even inferior to systems typically considered to be on the lower end of acceptable quality and performance, such as from Russia or China. To even have a hope of having an effective military, India is nearly entirely dependent on other countries and their MICs.