PK mount lenses

[Sung Nee]

I found out the so-called Sigma mount is in fact a PK mount. I am trying to 
find out which Pentax wide-angle lens can be used on the Sigma SD10, which 
has got a protective glass in front of the mirror so that protruding rear 
elements cannot get in.

I am looking for a lenses in the 14mm range, which translates into a 24mm 
lens on 135 format.

I would also be grateful for any recommended lenses.

The lenses that I have are all FA lenses, with cams jutting out so that 
they cannot be used on the SD10 either.

Thank you all in advance.

Best regards

Sung Nee