My main issue here is why would someone who is a mortal want to spend 1 Refresh on a IoP w/ Breadth Weapon Power (of whatever flavor) You are spending 1 Refresh for a pistol. The real power of a breadth weapon (IMHO) is that, as a power, you always have it. You don't need ammo, it can not be stolen or removed from you.
Thrown onto an IoP in a low-tech setting, it has worth. In a setting where firearms are generally available, though, the only real value I could see is if the Item itself was very innocuous and would not draw attention if you were carrying it around. And an ornate, jewel encrusted rod or such does not count.
Weapon 2 Pistol, free. Weapon 2 ring, 1 Refresh. Not seeing a good bang for buck in most circumstances.