Great idea!
Assault Rifle 1
Assault Rifle 2
Assault Rifle 3
SMG 1
SMG 2
SMG 3
Pistol 1
Pistol 2
Pistol 3
Wow, it's totally not boring and monotonous!
Hey, look at Bushido's T + T, it's in great shape [IMO], and it's pretty much Assault Rifle B and A. Or just the words Classic, Modern, Retro, or...something else. Just call it something with the word knife in front of it. I'm not going to say tactical knife because you'll think I'm just a CoD fan or something like that, just call it a ____ knife.
Also, why are we arguing about this? Names go last. Haven't you seen DILBERT? The Gruntmaster 6000??