Sorry, there is no Merkava in Arma 3. However there is a fictional vehicle called the M2A1 Slammer which isn't equipped with a 60mm mortar or a 12.7mm commander's machine gun.

Independent and Opfor now have their own NVGoggles. Opfor uses "NVGoggles_OPFOR" and ind use "NVGoggles_INDEP". Blufor still uses "NVGoggles". The only noticeable difference is the side parts of the blufor NVGs are (still) tan, opfor are black and independent are green.

You will have to use
this unassignItem "NVGoggles_INDEP"; this removeItem "NVGoggles_INDEP";