It is a key part of customizing weapons and making them work best for different game styles and settings.
GRU Combo Grip AK-47. ...
Branson ASM10. ...
Cooling Compressor Barrel RPD. ...
RTC Retractable Barrel Striker. ...
Thunderbolt Sling HBRa3. ...
Wild Fire M16. ...
Tactical Flashlight RUS-79U. ...
Underbarrel Stun Gun Pharo.
The RUS-79U is an SMG that first appeared in COD Online as an Assault Rifle called the AKS-74U. It is one of the most Versatile SMGs in CODM, as it is very accurate and has a lot of gunsmith potential.