I know this question is a year old, but this thread is full of mis-information. If you had a parent/guardian turn it in (that is, if they are non-felons who could legally own firearms), the police would have them fill out some found property forms and depending on the state it would likely be their legal possession in 90 days, so long as it wasn't on the books as stolen and wasn't implicated in any crimes. BAM! Sweet 21st birthday present for you! Most likely someone was hiking or hunting and their holster broke, dropping the gun (come on, the kid said the holster belt loop was broken). It's not like he found a bag full of cocaine and hundred dollar bills, it is lost property that is not illegal in and of itself in most states.