I could understand if another OFB factory wants to make a competing design, but like you said OFT is already producing a design. DRDO from some old models I've seen were designing a variant with the grip and rails as well.
It's not only that, their ammunition is subpar. The SSS Defence guys trialing with OFB ammo says the same, then again both are competitors, but I believe them.
Labeled - Ishapore sniper MK I with NVD and Day scope
Looks like the .338 Lapua sniper rifle shown at the def expo.
More 7.62x51 OFB sniper rifle
7.62x51 OFB sniper rifle with different furniture than what we've seen those far.