True story: I bought one of Master's crappo locks for a storage unit I was using to buffer my recent move to my most recently built house. I've sort of built a couple of houses in the last 5 years to take advantage of some really good market dynamics in my location. That's all fun and games.
The fun ended when I locked up that storage unit for the first time. I came back some 3 weeks later with a truck full of crap I'd moved out of my basement. I was ready to quickly hump that stuff into the unit so I could go do something else. I stuck the key in the lock and... nothing... it was frozen. I spent about an hour trying to unseize it unsuccessfully. Luckily, I'd had my wife bring my corporate vehicle (an Expedition at the time) as a "chase" vehicle. I'd figured something would go wrong. I took that and got my (corded - but I had an inverter in the Expo, another thing I keep around in case something goes wrong) dremel and a cut off wheel and came back and cut that POS lock off and saved it. I found it could be unseized, but only if one end of the loop (hasp?) was free to move a bit - a condition that did not obtain when it was locked.
The only saving grace for Master: I sent them a photo of the ruined lock and my receipt and they replaced it with another POS lock.
Apparently, their philosophy is that, if there's one thing better than crap locks, it's lots of them.
My life is complicated, my time limited. I want something that works and works well, reliably. Perhaps SigSauer should get into locks. Odds are, some such firm does and, had I spent the time to research, find, and obtain a better lock, I probably wouldn't have had to go through such a time-wasting pain in the aces high episode.
As for Master, I'd like to sodomize them all without the benefit of a lubricant (I can write that, I think, because it's sufficiently clinical and sincere and expresses how angry I am about the whole thing).
Sadder butthurt wiser, -PJL