Make sure to put interesting characters as well. Most storygames have boring and uninteresting characters.
Just an MP5? Why no UMP45/40/9, HK416, M16A4, M16A3, M4A1, Glock 17, 92FS, HK45, Remington 870, M1014, and other toys? Let me carry M4A1, AK-47/AKM, UMP45, Remington 870 MCS, and 92FS. I'll be happy.