User blog comment:JoeRamirez/Call of Duty Modern Warfare 3 Weapons Wishlist./@comment-2192318-20110220045138/@comment-1693117-20110221215943

Err no Mr Wikia Contributor... the UMP45 is NOT a G36c. the UMP45, typically comes with Rails already on the top. Also the UMP45, Fires .45 ACP Pistol rounds, the G36 fires the standard 5.56x45mm NATO cartridged