coolbreeze:
How was the weapon used prior to being stored for 30 years? If it was well (or even basically) maintained there shouldn't be any rust, corrosion, or signs of either on the barrel and it's lugs or the bottom of the slide and it's locking lugs. Pay special attention to the link and link pin, as they (in addition to the slide) need to be able to move freely.
In other words just a good cleaning and lube job and enjoy it!
How was the weapon used prior to being stored for 30 years? If it was well (or even basically) maintained there shouldn't be any rust, corrosion, or signs of either on the barrel and it's lugs or the bottom of the slide and it's locking lugs. Pay special attention to the link and link pin, as they (in addition to the slide) need to be able to move freely.
In other words just a good cleaning and lube job and enjoy it!