The vast majority of Ishipore's I have seen have poor magazines, that won't reliably feed and eject a full ten round magazine. Most of them jam or fail to feed after 6 or 7 rounds.
These were certainly not top of the line rifles, and were made in India with the old ladder type rear sight. Totally impractical, especially in 7.62 Nato. (Notice, the barrels are marked 7.62, and not .308 Winchester, which is a much higher pressure round.)
The rifles are not highly sought after or regarded, and you should have no problems in finding one.
On the other hand, a full size Enfield Rifle, in very good condition, made in the late 1940s or 1950s, in .303, is simply a joy to shoot. Although longer than a carbine, it handles and points like a dream, is smooth as silk, and with the standard rear peep sight, you can easily hit anything you want out to 200 yards.
Just my experience.
Mannyrock