Depending on what springs you’re running, I’d replace the TRS every 8-10k. The recoil spring depends on the ammo, but every 3-5k. Mainspring every 8-10k. Keep a couple extra slide stops on hand. They will break randomly, but usually you can get around 10k or so on one. It isn’t a bad idea to keep one new one for carry and swap it out to a practice one for range use.
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