There is a "Collins Gem" version of the SAS manual that is reduced in size for carry in a ruck or pocket. Mine rides in the truck for reference or to be thrown in the pack if needed.

I believe amazon.com carried that version aside from the full size.

I just went to amazon's website and they do have it listed:

Product Details

Paperback: ; Dimensions (in inches): 1.00 x 5.00 x 3.50
Publisher: Harper Collins - UK; (March 1999)
ISBN: 0004723023 |

Hope that helps.