The bolt has to be pushed down slightly and pushed to the rear but it won't fall out unless you do that function.
Yes, I understand this however it's not like the bolt is held in solidly. And once out the firing pin will fall out.
The fact remains a true 'takedown' rifle will not have any of the internals exposed to potential loss - even if something (like the bolt) has to be pushed down. For example my 'takedown' Ruger PCC only the barrel & forestock are removed with nothing exposed or to potentially fall out. Also it has a quick release which negates the possibility of damage or wear and was OBVIOUSLY designed to be removed regularly.
My 39A is a 1983 model and the fit between the receiver sections is so tight you almost have to look close to SEE the transition between the two halves. I have had mine for over 35 years and have probably only taken it apart maybe 20 times for cleaning and I am VERY careful when I do so as I have to 'bump' it lightly with my hand to get it to separate.
I posted about the takedown aspect of this rifle as intelligently informative information and NOT debatably argumentive.
My hope is/was for those who may own a Model 39 or are possibly considering one would respect and heed this information based on MY experience of owning one.