Discrepancy is a .44 Desert Eagle found in Seraph Eligor's room and is almost identical to Final Argument. Discrepancy, according to the GECK, has a fire rate and reach of 1 while Final Argument has a fire rate and reach of 0, which results in Discrepancy having 4.5 attacks/sec and Final Argument having 3.6 attacks/sec. This is either a mistake or really clever on Nylonathathep's part.

dmg/attack: 65 (68.3)
DPS: 292.5 (307.1)
DPS (reload):
crit dmg: 35
crit chance: x 2
Attack statistics
attacks/sec: 4.5
AP: 32
projectiles: 1
spread: 0.3
crit effect: None
Ammo & reloading
ammo type: .44 Magnum Round
ammo/shot: 1
ammo cap.: 7
shots/reload: 7
reload time: 1.3s
Requirements & perks
skill: Small Guns
perks (dam.): Bloody Mess(+3.3)
repair: Scoped .44 Magnum
item HP: 500
weight: 4
value: 300