The Gun Digest Book Of The AK & SKS:
A Complete Guide to Guns, Gear and Ammunition
by Patrick Sweeney
Paperback: 288 pages
Gun Digest Books (Jan 13, 2009)
ISBN-10: 0896896781
ISBN-13: 978-0896896789
Grab one on Amazon, when they are available
https://amzn.to/2Vj6oni