To control the weapon in sustained fire you might want to experiment with the various buffer / spring combos advertised for the purpose
( endine is a personal favorite ) and a effective Brake is a must . You can spend lotsa dough on various brakes but imho , the Miculek Brake at around 40 Bucks is a dandy . Stand on your hind legs and put double alphas on a uspsa target @ 30 yds with 2 rd hits out to 50yds tickling off 2 -3 rd bursts.