Earlier today, I bought my first handgun, as I turned 21 a few weeks ago. I bought a used Ruger GP100. I have done research for months, so I am certain it was the gun I wanted, and when I go to the range tomorrow to test it out, I'm sure I will love it. My question is, how well do the GP 100's hold up over the years ? I didnt know how old it was when I bought it, I discovered a few moments ago by looking up serial numbers, that the gun I bought was manufactured sometime in 1988. Being 21 years old, how long can I expect this gun to hold up ? Assuming that I perform routine cleaning/maintenance. Any info on older GP 100's would be great, thanks.