Guys .. you all are unnecessarily beating around the bush and missing Forest for woods ...
Indian Army has to primarily equip itself for envisaged roles out of which conventional military operations are primary role and coin operations is the ongoing secondary role.
All will agree that the primary task of a front line soldier, that is infantry soldier is ti kill the enemy with his weapons. The battlefield environment has considerably changed in that the soldiers are now protected y modern BPJ and hamlets.. The utility of soft skinned vehicle has also enhanced in the battlefield.
So infantry soldier requires a weapon which can engage the enemy at four hundred or five hundred meters (forward edge of minefield or from home edge of minefield in attack) and has sufficient punch to penetrate a BPJ. hamlet and soft skinned vehicles at 400 = 500 meters. Only 7.62 X 51 caliber is capable of doing that. Sig Saur meets that criteria as it is also capable of automatic fire in CQB battle.
Other infantry soldiers who are engaged with crew served weapons will fire on enemy using personal weapons when he is very near say about 100 -150 meters. Here 5.56 X 45 caliber ammunition is capable of penetrating a BPJ and helmet due to its sheer high velocity.
Hence in conventional operations the two caliers meet the requirement of all Infantry soldiers.
All other Army men, be it a tank-man, artilleryman. drivers or signalers. will enegage the enmey maximum when he is 100-150 meters away and rarely a distance more than that. Their personal weapon is basically meant for self protection. AK 203 and Caracal carbines suits that task very well.
In CI / CT operations which primarily is focused in CQB, the soldier require a heavier punch with good penetration. heavy volume of fire and very high reliability. AK 203 meets all those requirements very well. Hence all soldier there will be equipped with AF 203 of 7.62 X 39 caliber.
So that is what the reasoning is. And that is what the scheme of things appear.
Summing up everything.
1. First batch of SIG 716i to counter Paki G3s on Western Front.
Second batch to provide overmatch on Eastern Front.
2. 5.56x45mm carbine, because it was bit of an irony to field ABMs and Sterling SMGs at the same time. Most countries now field carbines in place of SMGs.
These will go to secondary personnel, like artillery crew, sappers, driver. Basically everyone who will need a decent weapon, but the chances of firing it is pretty low.
3. .338 Lapua Magnum bolt actions, because we shifted from Soviet doctrine of DMRs to Western norm of sniper-spotter. This was necessary as we were sitting ducks for Paki Arctic Warfares.
4. AK-103M and 7.62x39mm is what I'm still unable to comprehend. As I said it's only good for CI/CT Ops, so arming a whole bunch of 7 lakh infantry for anti-terror ops saying they are "non-frontline" troops sounds bit absurd.
Troops who really needed an AK are already having them; the RRs.
Though a 6mm calibre is a far dream for us, in my opinion a 62gr rifle would have been a better choice.
Believe me or not, this whole deal sounds like a BJ to the Russians. Coz if 7.62x39mm was the priority, we already had Ghataks and TARs. Pretty much similar to what we're getting in the name of AK-203.