When you get it. Keep it.
I bought mine for $440 in 1980 through a gun club in the Navy. Sold it for $650 twelve years later to buy an engagement ring for my girl. I still got the girl, but Oh how I miss that AR-15.
AMEN! Bought a Colt in ‘87. Sold it in ‘90.
All parts inside were stamped with a “C”.
Triangular handguard. Bought an FN/FAL in ‘99.
Then the dust up in the sandbox kicked off and almost all mil-surp went bye-bye. Picked up a Bushmaster in ‘07.
Miss that first one.
You might be able to sell the girl and get another AR.
If you behave right you might have the AR longer anyway.
Be careful of tragic boating accidents and robberies.
For the guy wanting to plink... get an AK-47. ARs should be for serious work or driving tacks.