I am looking for information to restore or refurbish a newly acquired Buck Rogers XS-38 Ray Gun.

I realize I might be in the wrong area to post this.

I got here due to this site being mentioned for a restoration of the exact same toy at

Buck Rogers Guns And Ads - Page 3 - SPACE GUNS - TIN TOY ROBOTS

If anyone would be able to point me in the right direction on how to disassemble this gun safely, if would be most appreciated! I don't want to destroy a peice of history........

Here is my Ray Gun.....

Any help would be greatly appreciated!!