Here are some PICs of a 416 security forces gun. Serial numbers everywhere.Excellent looking trio, jjjxlr8! I ended up with a couple of refurbed '54's in trying to acquire SKS-45's of my birth year. You landed a beautiful '54 specimen, though!
Love the dual 公安 Chinese Public Security rifles! Is the top PS gun a /416\ arsenal and the bottom PS gun a  arsenal?
Thanks for posting them! Are they posted somewhere in a multiple-pics thread? I'd like to see both of those in more detail!