My wife’s uncle has a 1977 Colt Ar-15 that he bought new in 1978. He wants to sell it. He really did only fire about two mags through it, then stuck it under his bed. Said it’s wht made him realize he needed glasses. Pretty sure he cleaned it though. He’s a very detail oriented engineer. Just looking for a ballpark figure to put him on the right path. Sadly, he lives up in Michigan and I actually like him or I’d tell him it’s only worth a couple hundred and I’d have another caliber to collect.