Blades are wonderful weapons, but hardly adept at ranged combat. [i]He sighs for a second.[/i] Alright, let me see... You wanted concealment as a priority, which already limits you to carbines and other shorter weapons. Handguns will be perfect aside from longer ranges and against armor. For a carbine, I'd recommend the ACE-21 CQB, Israeli origin, Venom's made some modifications. Fires standard 5.56mm, has a crane stock and a relatively short barrel. Rail systems take almost any attachment, and the weapon's ambidextrous. For handguns, I'd recommend the Colt M1911A3V, our tailored version or the Glock 43. Both weapons are reliable and very effective at doing what they're built for, and they're most certainly concealable. Now if you want more power to be concealable, I'd recommend the Mossberg M590 tactical shotgun, 12 gauge pump action. Also, take a look at the Magpul PDR and the UMP-9 PDWs. Short, compact, rapid fire rates. Easy to use, lightweight, and very reliable for PDWs.