What would you buy?

[brutal]

I did a little research on these as I'm not really familiar with them. I do know IWI makes good products (the Tavor is an example).

It looks like a good firearm to me but know you'll need to get some sort of sights or optic for it to use it as the models the IWI site showed didn't come with any sighting system.

Unless you want to go the route of a Form 4 for additional cost and wait time, you'll want to get the 16" or 18" version of that carbine/rifle. Anything shorter than 16" for a carbine/rifle is considered an SBR (Short Barreled Rifle) and requires an ATF Tax Stamp. The 1 exception is the 12.5" pistol version that has a "brace" vs a "stock". Currently the braces are once again legal, but ATF has been trying to get them banned since before the first Trump presidency. Know that if you "shoulder" a brace (like you would a stock), law enforcement can claim you're using it as a rifle and give you grief (possible arrest).

Or a 14.5" with a pinned FH or can mount... Kinda odd/lame though that IWI doesn't offer one.