Being a bit of a gun nut, thanks to HotD and Call of Duty, I often fiddle around in Doctornoob's Pimp My Gun app. Here are some results:

[B]ASM1 Inspired[/b] (CoD: Advanced Warfare)
[img=http://fc04.deviantart.net/fs70/f/2014/294/f/2/pmg_asm1_by_jettryu-d83nott.jpg]

[B]SN6-Inspired[/b] (CoD: Advanced Warfare)
[Img=http://fc04.deviantart.net/fs70/f/2014/294/5/1/pmg_sn6_by_jettryu-d83nnai.jpg]

[B]EuropaCorp. Amphibious Submachine Gun (ASMG)[/b]
[Img=http://fc08.deviantart.net/fs70/f/2014/275/a/0/pmg_europacorp_amphibious_submachine_gun__asmg__by_jettryu-d81bfbj.jpg]

[B]Atlas45-Inspired[/b] (CoD: Advanced Warfare)
[Img=http://fc01.deviantart.net/fs70/f/2014/240/d/4/atlas_45_inspired_by_jettryu-d7wrf7z.jpg]

[B]S12-Inspired[/b] (CoD: Advanced Warfare)
[Img=http://fc07.deviantart.net/fs71/f/2014/240/8/f/s_12_inspired_by_jettryu-d7x14o4.jpg]

[B]Custom MP5[/b]
[Img=http://fc00.deviantart.net/fs71/f/2014/246/8/3/mp5_by_jettryu-d7xt9ol.jpg]

[B]Custom SMG[/b]
[Img=http://fc00.deviantart.net/fs70/f/2014/246/0/4/pmg_custom_smg_by_jettryu-d7xtc3a.jpg]

[B]Suppressed Bullpup Assault Rifle[/b]
[Img=http://fc02.deviantart.net/fs70/f/2014/259/1/6/suppressed_bullpup_by_jettryu-d7zeraa.jpg]

[B]Ballista Explosive Flechette Launcher (EFL)[/b]
[Img=http://fc06.deviantart.net/fs71/f/2014/272/f/c/untitled_by_jettryu-d80zgav.jpg]