I think at least for a non MG, this is better than a MP5 at least in MA, it might not contend with a kel tec sub 2000, but i could see this being used with a red dot, and making it a fun pistol carbine running class, take a glock 17 and throw in a 34/17L barrel, and i think it could be pretty accurate, as well as a light on the bottom. Im thinking about it , but id probably want to do it on say a glock 10mm, or .45 glock, something bigger, like a glock 21 , with one of those Kriss vector mag extension, 30 rds of .45 in an uzi looking platform, not bad.