TFB: KRISS Vector vs. H&K UMP Part 1
OptimusPrime
22 Dec 2013
If you follow real steel stories so you can relate these to your airsoft guns, you might want to check this good story now at The Firearm Blog where they brough some .45 SMGs to a Texas PD Training (DeSoto PD). A comparison of the KRISS Vector GBB and the Heckler and Koch UMP, this should be good reading and this is only part 1.