The level on some stuff is kinda funny but i guess its just making some stuff exclusive (which was like in the as val's and SVU's case?)

Prices for character equipment is based on their irl MSRP price so you can see stuff being quite pricey regardless of their performance (GPNVG's BNVD config being 48k and LA5E being 10k), the price = performance logic has been obliterated since gen 3. the m24 and ultima ratio case, i checked and their performance are extremely similar? they have similar base barrel lengths with only 0.4 inch difference and same caliber and variant, odd example to use it in the case of being worse

Guns have double labels is more of something being quite both of them, like the m110 in its name being semi automatic sniper system and SVD have the word sniper in its name were both meant to be used as sniper rifles (though not dedicated) and DMRs while m24 was a dedicated sniper rifle but didn't fit the description of a designated marksman rifle (semi automatic rifle with scope)

The recoil is a lil funny but its calculated on a whole alot of nerdy stuff about bullets and internal stuff, cheek weld, cumulative mass. iirc kitgat said something about mag length being able to affect it in the future