Yes I just bought one today it talked about on the back that it was pick resistant. I had bought it thinking it was one of the ones I could rekey. It was 10 dollars for the lock... Im pretty new to lockpicking and well I was able to open this lock up constantly rather quickly with just one of the picks that pick individual pins. I am still unable to pick a lock I bought for cheap I dont know what kind it was a small bronze master lock with a hard plastic black casing around it with the gold Master lock logo on it and the keys also have plastic tips dont know if that helps which I spent 2 dollars on that one... Does anyone know anything about the 3120 lock is it supposed to be a really easy lock to open Im just curious.
The black-clad lock could be a #121, #131, #141, #151, depending on the size....however for 2 bucks (assuming you bought it new ) I'd guess it to be a #121, or #131. Expect spools anyway.
If it ain't broke.....pull it down and see how it works anyway!