As a private citizen in the US- you can't. The TAVOR was introduced AFTER the ban on registration of new fully automatic weapons in the US (May 1986).
The Tavor is an Isreali assault rifle. The full name of the rifle is IMI Tavor TAR-21. It has been the standard issue weapon for the Isreali infantry since 2009.
Israel
Have never heard of an underwater assault rifle. In the US, you must be 18 to buy a rifle, and 21 to buy a fully automatic rifle.
For a semiautomatic rifle, you must be 18. For a TRUE assault rifle, which is capable of burst or full auto fire, you must be 21. Federal law.
18 to buy a rifle or shotgun, 21 to buy a handgun or assault rifle.
You can buy a semi automatic Title I rifle at 18. To purchase a true, select fire (auto or burst) NFA tax stamped assault rifle, you must be 21.
18 for a military style semi automatic. For a true assault rifle, which would be an NFA Class III full auto weapon, 21.
A TRUE Assault Rifle is fully automatic. Federal law requires you be 21 to buy one of those in ANY state. However, what people may CALL an assault rifle (such as a semi-auto AK47) can be purchased at 18.
18 for long guns like rifles and shotguns, 21 for handguns. The so called "assault rifles" are just really semi automatic rifles that look like military guns.To own an NFA firearm, such as a short barreled rifle or shotgun, or a true assault rifle with the selective fire functions, the minimum age is also 21.
1- M4A1 2- M16 3- M4 4- HK 416 5- Hk 36C 6- Hk 36k 7- AK47 8- HK G3 9- LWRC PSD 10- Tavor Assault rifle 11- Magpul Masada 12- AR-10 13- M-110 Sniper Rifle 14- M249 SAW PARA 15- 50 Beowulf 16- XM8 Assault Rifle 17- 6.5 Grendel Alexander Arms 18- Barrett .50 cal sniper 19- Ak 74 20- M16A1 21- Dragunov (SVD) 22- Beretta LTLX7000
its a very new, high tech, cutting edge rifle with a laser and red dot built in so considering the price of an M-4A1 (about $1,300), i would say in the $2,000-3,500 area. It also probably has to be cleaned often and uses expensive ammunition.
Considering damage, the best assault rifle would either be the TAR-21, or the AK47.