_________________________________________MrApathy said:oiled the guns. used virgin M40 magazines. modified 4 new M40 to use 12 rounds of 9mm. I used 2 modified S&W Sigma 14 round mags in the M40 along with 4 other unmodified M40 10rnd mags. both guns functioned flawlessly with 150 rounds each. not a hicup from any gun or magazine. accuracy at 25 yards was good.