I'm going to make cutaways our of them, but does anyone know how to best take them apart? There appears to be some sort of ring clipped in, I tried drilling but no dice yet (I'll Drill deeper later...)






I think I may just have to drill a little deeper, but I was just wondering if anyone had any other thoughts.
Thanks in advance, you won't hear from me for a while, I'm catching a plane tonight, and won't be back till the 23rd. I'm off to Mexico, I'll try and take some pics of any interesting locks I see.
Sorry about the pic quality, I was in a hurry!
Cheers!