Heavy weapons in term of weight in Counter-Strike Online.
- Main article: Daewoo USAS-12
Daewoo USAS has the speed reduction of 27% when wielded. When upgraded to USAS-12 Camouflage, the speed reduction is reduced to 23% which means 4% lighter.
- Main article: StG 44
StG 44 has the speed reduction of 14%, which is the same to heavy machine guns. When enhanced, the player can choose to reduce its weight to make it lighter.
FN M249 Para
- Main article: FN Minimi.
FN M249 Para is a heavy 100 rounds machine gun that when player wields it, speed is reduced by 14%.
- Main article: Rheinmetall MG 3.
Rheinmetall MG3 is a heavy 200 rounds machine gun that when player wields it, speed is reduced by 14%.
- Main article: M60E4.
M60E4 is a high firepower heavy machine gun that is fed with 100 rounds of 7.62 NATO. When wielded, the player speed is reduced by 14%.
- Main article: M134 Minigun.
M134 Minigun is a high firepower heavy minigun that is fed with 200 rounds of 7.62 NATO. When wielded, the player speed is reduced by 39%.
- Main article: Hammer.
Hammer is a heavy melee weapon that can knock away zombies in direct hit.