Hi Saw,
Somewhere in the zip (I don't have it lying around, alas. Bad Dinger), there should be a list of weapons and types. From memory, NP2 conforms to mod tagging procedures (to prevent overlap).
So every object, ammo and weapon in SEB NP2 will be prefixed by SEB. In addition, SEB has two sets of magazines for all weapons: one with OFP standard dispersion, and one with increased dispersion. Default is the latter (and it's sweet). IIRC, dispersion ammo has a hyphen at the end.
So it would be something like
SEB_M16A1-
(The mines are of course, prefixed by COC, as in COCPOMZ)
So no, they're not named just like the regular OFP ones. And no, I don't know their names, but they should be listed in the documentation in the archive file.
Enjoy