Ok after getting my first Glock (a G19) on Thanksgiving I have started looking to add to my collection. I shot my Dads Ruger in .40 and really liked it so I started looking for a Glock in .40 and found a used 2nd Gen G23 for $385 with one 13 round mag. Gun looks good with just a little holster wear. Thoughts? Anything I should look out for with a 2nd Gen? Thanks in advance.