I would recommend your function check after any tuning/repair or every couple of years of use. On a safe outdoor range, load a mag with 1 round, a couple with 2 rounds, and several full mags. When time to test "proper disconnector" function, shoot them in that order. Be ready to control gun with two hands after the first mag. If you have any doubles (or worse), fix it better. There often is no place at a match to do this kind of test. Nor time to conduct it, nor time to fix it. Bring a working gun and working ammo to a Wild Bunch match! good luck, GJ