that looks like the kel tec plr16. they are legal in ny
also to boost creep go for the 5.56 if you like the fact rounds are easy to find. but if you want something better go with a 22-250. the ammo cost more but the bullet is so much better. best varmit round imo.
also whats your guys take on barrel length and twist rate for a ar platform in 5.56? looking to shoot 55grain which is the most common i think