User blog comment:Callofduty4/Favorite SMG in MW2?/@comment-1484645-20091228180035

Tie between the Vector and UMP for me. It really depends on what optic I feel like using. If I'm using a red dot sight, I'll use the Vector. ACOG, I use the UMP. I don't use the Holographic, because I hate it. The ironsights on either gun are okay.