I'll repost mine.
My first creation, an Uzi/G36 hybrid with a pistol-style receiver and integrated ACOG.
A pistol variant of the M4.
A battle rifle variant of the XM8, with an ACOG and a larger caliber magazine.
A pistol-receiver SMG with foregrip.
The Super Hammer autorevolver, chambered in .50 S&W and with a fire rate of 200 rounds a minute.
Pump-action sniper rifle with attached silencer and 8x scope.
Semi-automatic super-rifle with 80x scope, designed for shots over a distance of 5km or more. Satellite targeting capabilities optional.
Buzzsaw hyper-velocity SMG with a rate of 2000 rounds a minute. The rounds are electronically triggered, and an under-barrel grenade launcher and spare clip holder provide more firepower.
H&K .45 UMP variant. Not too proud of this one.
PN-TS assault rifle with under-barrel grenade launcher. Provides covering fire and heavy support, or makes accurate semi-automatic shots over medium range.
Force 'A Nature sawn-off breach-loading shotgun from the TF2 videogame.
L85 variant.
Another pistol-receiver SMG with foregrip.
SCAR-VH support weapon with grenade launcher and drum magazine.
G36 Sniper variant with comfort stock, bipod and 8x scope.
552 Commando rifle with silencer and under-barrel flashlight.
FN-Q100 SMG with silencer and red dot sight.
Triple-stringed, strum action guntar with red dot sight and grenade launcher.
Phew! I'm gonna go to sleep now.