Hey, welcome if we haven't said so already! THANKS for asking BEFORE buying! Everybody is indeed correct, fakes / replicas. At any rate, you might want to look into some reference books before buying, or go to some military shows to get a feel for the real thing. You can also browse Age of Kings, Kaiser's Bunker and others to start really looking for the shape of spikes, shells and such. Also, take a look at the originals shown on this forum.
I would guess India or Pakistan. Many I've seen from these countries have the same incorrect "pinhead" shape to the shell. Usually the shape tells me it's a repro without even having to look at the fittings.