shelf life of plastic firearms

Originally posted by u/kind_strange_man at 2025-06-14T16:37:13Z

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I think the expiration date of the filament used in firearms will depend on factors such as wear rate and temperature changes. In your opinion, if it is never used and just sits in a corner at home, for example next to where you sleep, how long would it take for its reliability to start decreasing, for example losing strength by around 20%? I think rebuilding every 2 years may be necessary.