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Today I got in the mail a new lock to play with.

The CISA SP - Security Profile (is there another name for it?)
Basically it's a pin tumbler with a nasty keyway. Reminds me of an ASSA Twin I saw some time ago:


In addition to the keyway, this lock has 4 ball bearings (2 on each side) as a passive system to restrict keys.
Here's the plug:



On one of the sides (the second image) it only takes 2 ball bearings that are let inside the plug by 2 dimples on the side of the key. On the other side (the first image), the chambers are deeper, so it also has 2 pins before the ball bearings:


Here's the pin configuration for this one:


3 spools, 1 serrated(?) and a regular driver pin. The first key and driver pins are hardned for anti-drill protection. It also has 2 other anti-drill pins on the cylinder:


And here's the key, pins and plug:


As for the housing, it's not rounded from the inside. Any guess why that happens? The image isn't very good, but you can see the squarish shape of it:


Now off to picking it!

Can we please see the other side of the key, too?

Gordon

Here:


The dimples are at the same spot on each side!

Heh, warding overhangs for protection from the evil entry machine.

HOLY SHIT... step aside folks... it's GUTSHOT TIIIIIIIMMMMmmme!

Just a guess... but will that (in some way) make it difficult to achieve a full rotation after it's been picked? *shrugs*

I'll let you know when I manage to pick it

It is the same mechanism as in the Abus TS/TSB/TSK 5000. You can find a few videos of those being picked on youtube. Depending on the biting they can be really challenging! Good luck!

from what I see there, two of the pins are so long that they probably do not need lifting, and the keyway can probably best be accessed for the other pins by simply filling the bottom of it with a big tension blade and useing a dimple pick across the top of that. Possibly a half diamond dimple pick such as femurat makes. this could lift the pins from the space between them
None of the pins appears to need much more than a few milimeters of lift, just like a dimple lock.
I read all this into the front view photo of the cylinder and the view of the key and pins. you show.

Evil keyway....