I live near the beach and regularly head over for an hour of escape. Two years back I bought a Glock 43 to fit into the pocket of shorts…just because I am a paranoid.
Leaving the beach, shorts are wet from bathing suit and Glock and spare mag always get a bit damp.
Getting home: wipe off the ammo, (replace the carry ammo often), brake spray the gun and add lube.
What should I be doing to maintain the Glock around salt water?