What ammo?

I've read surplus 7.62x51 can result in light strikes, removing the firing pin spring fixes that problem, but can cause others in the form of drop safety and commercial primer slam-fire.

Any of this true?

I have 150 gr and 165 gr commercial JSP's. The barrel twist favors light bullets and that's okay with me. I've thought about 130 gr JHP's too.

I've read the 1st batch of 2019/20 Tavor 7's were sort of pre-production and changes were made in later units.

Optics? Either a low-powered optic or RDS. Already have the big Meprolight RDS. The name escapes me but it's the newest version. Want folding irons, too.

Sling?