Yep that is exactly that, an upscaled 7.62 NATO calibre variant of their 5.56x45mm Carbine which is ;inspired; from SIG SG550
^regd SG550 part i would like to clarify before people start confusing themselves calling it ;copy;
it definitely isn't copy, but what i meant essentially was, the receiver design that is there on OFB's carbine is taking its inspirations from SG550 series, with being of two sections design like in AR-15 and other modern assault rifles
receiver of SG550
View attachment 177932
and here disassembled
View attachment 177934
vis
OFB // AWEIL // ARDE 5.56x45mm Carbine (Sheesh why don't these people give it a name already)
View attachment 177941
and disassembled (though graphics seems to be somewhat inaccurate, like missing out gas piston on bolt carrier etc)
View attachment 177933
So yeah, this way it is a SIG SG550 inspired project, and both are also Kalashnikov derivatives in terms of main operating mechanism of gas system + bolt and bolt carrier assembly
you can get further validation that it is inspired from SIG SG550 when you visit OFB Ishapore's Rifle Room where they are having SG550 (seems semi-auto only) showcased there, credit to sandeep unnithan of course
View attachment 177946
so they already had their base weapon in hand, just had to make something from it
though do also note, OFB // AWEIL // ARDE 5.56x45mm Carbine is a milled receiver weapon as visible, while SG550 series was a stamped sheet receiver one, but milled is better for us
otoh JVPC, which is also two-section receiver design (in semi-bullpup Uzi like configuration), is stamped sheet receiver build one.