The chainsaw is powered by a miniature nuclear battery that drives a toothed chain along a grooved bar at up to 8,000 RPM. This allows the sharp teeth to shred virtually anything they come into contact with. It differs from its standard variant in that it can accept modifications.
A fully upgraded chainsaw, with all related perks, is the second strongest melee weapon in the game, only surpassed by the thermic lance.
The damage and DPS displayed is counted for 1 second of continuous attacking. The critical damage, however, is counted for every damage tick. Those ticks happen tens of times per second and because of this, contrary to popular belief, the chainsaw, along with other "hold down for continuous attack" melee weapons, is extremely strong with critical chance/damage bonuses. With no critical damage bonuses, difference between 0% and 20% critical chance is double the amount of damage displayed. With 100% crit chance the damage seems to be seven times the basic amount.
This weapon, like all other continuous attack (automatic) close combat weapons, has only its "start-up attack" animation sped up by attack speed bonuses, while damage dealing and DPS is completely unaffected.
Due to an engine bug, the Ignore DT/DR effect does not apply correctly and because of this, Piercing Strike gives a marked improvement in DPS.
Chainsaw (GRA) with the alloy frame modification
Chainsaw (GRA) with the carbide teeth modification
Chainsaw (GRA) with the HD (heavy duty) chain modification
Chainsaw (GRA) with the alloy frame and carbide teeth modifications
Chainsaw (GRA) with the HD (heavy duty) chain and alloy frame modifications
Chainsaw (GRA) with the carbide teeth and HD (heavy duty) chain modifications