bolt
breech
The bolt.
Bolt
bolt
bolt
I would think the bolt sliding forward in the receiver would close the aperture.
The bolt.
telescopic aperture battle
Impossible to answer without knowing the model of the rifle.
The answer is no. All the equipment, including the rifle which each IDF soldier receives, belongs to the unit in which he serves in. Therefore when the soldier is done serving, he must return his rifle to the units armory.
No, however you are able to get a sniper scope for all of the bolt action rifles.
shotgun for close range and rifle for long range.