Movie Prop Master is an
actual job title on the set of a film. I use that when I interact with jittery anti gun folks, like city officials, insurance folks, 'some' police, and the ignorant lay-public. Using the more accurate term Gun Wrangler or Armorer has actually made people freak out, even though many times I am NOT the actual propmaster for the entire film (only the weapons related portions).
The real propmaster is in charge of everything like chairs, plates, plants, rugs, sheets, pens, pencils, etc. etc. etc. I don't ever do anything like that, however, I do cover everything related to the weapons as well, holsters, rigs, body armor, tactical gear, web gear, accessories, etc. which a regular propmaster wouldn't have the slightest idea about.
It doesn't mean that I am a 'master' of anything. It is a Politically correct 'alternate name' I sometimes 'adopt' to keep anti gunners from flipping out. When I say "prop" they relax, somehow assuming that all the guns are now 'safe', even though they are real and can be re-converted to live ammo fire eventually, (or immediately if they are manually operated guns).
On the master note, I tend to have an immediate bias against anyone who self proclaims themselves a 'master' of something. "I am stealth master" "I am combat master" To my ears it sounds obnoxious (sorry guys) and makes me think of an angry 13 yr old Call of Duty fanboy. In the real world, you self proclaim yourself a 'master' of anything, you'll get a real world smack down faster than lightning.
Edit:
On a lighter note, the traditional name for a woman in that role was "Prop Mistress", but apparently I'm the only one left who uses that antiquated term. Mike Papac once laughingly warned me NEVER to utter that phrase on a set with a FEMALE Propmaster. Her inner angry feminist will kick my ass! Which is why we see more and more female actresses proclaiming themselves to be 'actors' (which is MALE in gender).