Some items which were spawning in 0.52 experimental aren't spawning in 0.52 stable which leads me to believe there are no spawn points configured for them (as with the ak74 mags in police stations last update). They are:
Atlas bipod (been missing since 0.48)
Mp5 buttstock (also missing since 0.48)
Mp5 rail handguard
(Chainsaw) - possibly in
Quiver for bolts
Quiver for arrows
Chenarus prison pants/shirt
Chenarus prison hat (these may be added as a prison only spawn however)
PM73 RAK 15 and 25 rnd mags
EDIT: The PM73 RAK and mags DO spawn, however the rate is ridiculously low. I saw a video where someone found a PM73 in 0.52, however they had to find more than 300 MI8 heli crashes before they found it: I think this needs looking in to.
If anyone has found any of those items in stable please leave a note :)
Some items also only spawn at Christmas trees and no where else, and they should have fixed spawns at barracks and heli crashes IMO:
Finally the .22 pistol mag for the Amphibia doesn't spawn at heli crashes like it should while the gun does. They do however spawn elsewhere (police stations, deerstands etc.)
I would politely but strongly recommend this issue be dealt with before the next update is released so we can use these items in game (the bipod and pistol supressor would be very nice to have in).
Thanks devs and I hope this can get fixed soon :) happy holidays!