I liked the grease gun too, I could put 15 rounds on a bull at 15 yards firing full auto(all right one or two rounds were out but so what!).
15 very short “yards” maybe, and a very large “bull”. The M3 grease gun fires very slowly, like 7 shots per second, which a fast hand can match with semiauto fire, or even with a DA revolver. google for jerry Miculek, for instance, or search for him on youtube. you will get your eyes opened very wide. :-) the m3 is very heavy, at 10lbs +. It never was all that reliable a feeding gun, some of them were made with smoothbore barrels. It was strictly a WW2 emergency pc, like the sten.