First of all..
-XM Series is based on the G36 Series.
-XM Series is a canceled project, while the G36 is established in the German army and in Special Forces around the world just like the MP5 or UMP.
-You call this "decent"? >>
-Or this >>
MG4, 100 bullets in 8 seconds, most precise and modern Machingun in the world. H&K.
I call this epic.