Found this on trmilitary forum, credit to user named Deno. This should be the designated Sniper version of MPT. (He also posted a couple of other pictures this one and other versions of MPT).
MKEK unveiled two new variants, a carbine and a sniper rifle, based on the MPT-76 rifle for the Turkish Armed Forces at IDEF 2015 in Istanbul.
MKEK and KaleKalip company representatives told IHS Jane's at the IDEF show, that while the Armed Forces are focusing on the standard infantry model of the MPT-76 rifle (with a 406 mm barrel), two new variants of the rifle are currently under the army evaluation.
The first one is a 306 mm barrel selective fire carbine, while the second is a 506 mm barrel semi-automatic sniper rifle. The prototype of the latter was presented at the KaleKalip booth.
Also a question, does anybody know from which company the scope is? Is it indigenous?