lol i use that gun i dont think you was 1 shotted you can shot 2 bullets fast with that gun i think he hit u with 2 bullets i mean you probably said he shot it once next time you get kill by one look at the mags on the killcam because it will show you that he shot 2 it so fast you cant tell the differnce and i use that gun with bling, coldblooded, sitrep i hope that helped

p.s go type in youtube mw2 wa2000 and watch some gameplay