tumbleweeddude
get a tm

Hollywood Prod.
I got mine from my grandfather and I'm in my 40's now and its still working. 40 - 50 years ????

Glacierwolf
Airguns, when properly lubricated and fired several times a year will last 40 years between seal replacements. Replacing the seals and relubricating the insides just takes an hour and maybe $7 in parts.

Drop.Dead.Daniel
About a few days, if you play AS a lot. He's asking about airsoft, not air guns. Air guns can last decades longer. For example, my dad gave me his 1077. He got it a long-ass time ago

Randy
Depends how well you maintain it. Just like a piece of equipment if it is neglected it deteriorate rapidly.

Buffalo
They can last a long time if properly maintained. I got a crossman airsoft shotgun three years ago and it still shoots like the day I got it. My friends and I all bought the same shotguns on the same day and all of them still work great. My only complaint is that after excessive use (two full years and over 100 airsoft battles and tons of target shooting) the shotguns pump receivers fall off, but a little super glue and or duct tape and its as good as new. If your going to pay more than $35 for an airsoft gun try looking on sites like airsoftgi.com or airsoftmegastore.com for other guns, you may find one you like more. Hope this helps