Anything that is held together with screws -- guns, motorcycles, whatever -- should have the screws checked for tightness on a regular basis. The whole reason screws are used is that THEY ARE REMOVEABLE. You can ignore this fact and have stuff fall off and get lost; or, you can add Loc-Tite and then curse the stuff when they later have to be removed; or, you can just touch 'em with a screwdriver now and again...

People who claim screws have never fallen out of anything they own either have never examined them or never use the item enough to cause them to loosen -- or, they are extremely lucky.

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Pisgah