Avocet ABS MK3 - No Key
I recently bought a place that has an Avocet ABS MK3 locking the back door (closed), but no key! I have keys for the rest of the place (more Avocets), but none turn the back door lock.
I know my options are limited, and I've seen various defeaters/unlock tools being advertised, and they might actually be cheaper than getting a locksmith in (who may just drill the lock anyway). And I don't have the patience to learn to lock pick, and attempt to pick something like that.
And then I thought about snapping it. I know it has a sacrificial front to prevent this, but since I have access to the inside, I wondered if that was worth a go?
Has anybody done this? If so were there any complications after the snap?
Or would anybody recommend some good drill bits
Thanks!