eightball its from the Estonian army I believe.
Yes it is, under the name of Precision Rifle M14-TP. TP meaning täpsuspüss (precision rifle).
Optics is 2.5-10x, weight 5.8 kg (with optics, unloaded), stock is ambi, custom made IIRC, ordered from some company that isn't mentioned much.
Why does estonia use M14 and G3, other than ammo commonality amongst sweet battle rifles?
Because the US gave us a bunch of those surplus M14-s (that are reworked into the beforementioned TP standard to augment the small supply of Galil Snipers), alongside with M1911 pistols that were destroyed lately.
Worth to mention, these aren't G3 rifles, they're AK-4s, Swedish licencesed clones of G3, given as "humanitarian aid". I usually tote one around when on field training with KL. Sweds gave us also M45 SMGs and KSP 58s (FN MAGs). From Germany we got MG-3s.
These guys on the picture aren't Army guys, they're members of KL, since we use the M14 TP and AK4 as primary rifles, Army uses Galils (at least the active units, reserve might use some AK4-s). Also, in KL there isn't much of a standard sniper concept, more like designated marksman, operating in small squad, not in independent pairs.