FWIW, if your reaction to the recoil is causing the pistol to double-tap that's one thing, but if your handling the recoil and NOT re-setting the trigger and re-pressing it DUE TO THE RECOIL, this is a pistol that needs a trip back to where it was made.......
I had a G21 that developed this quirk, one squeeze of the trigger got ya 2 rounds on the target.
IF I could have been certain that it'd stop with 2 rounds, that might be one thing but when there's 14 rounds of 45acp in the mag, should it go FA, you'd for certain end up killin folks behind ya, as the recoil would probably have "recoiled" your hands in back of your head by the time the 14th round goes off.
Learned the hard way once about breakin the sear edge on an older 1911 I thought I was smoothing the trigger on. It only had a 7 rnd. mag and went FA....., the last 4 rounds stiched right up the batter-board at the range I was at, quite a startling affair and one that attracted far more attention than I wanted.
No too safe when big bore rounds are in use, so I'd sent it back if it's the pistol.
Mike