M99 Weak Point Crit Railgunner Build

XQR Smart Round System · M99 Sniper · Concussion Device · Supercharge

Data from build 21587608, updated 23 Sep 2026

Survivor

Railgunner

Forgotten Nomad

Railgunner builds · switch build

M99 Weak Point Crit

MediumCritBoss killerLate game

Railgunner turns crit chance into crit damage, and weak points are her only crits. Stack Lens-Maker's Glasses and Laser Scope, hit heads with M99, and bosses disappear.

Loadout

PrimaryM1XQR Smart Round System
SecondaryM2M99 Sniper
UtilityShiftConcussion Device
SpecialRSupercharge

Equipment

Ocular HUDOcular HUD adds +100% crit chance for 8s, which her passive turns into crit damage.
Primordial CubePiercing shots like Supercharge hit more of a clump.

Why the core items

Lens-Maker's GlassesHer passive converts crit chance to crit damage at 1:1, so every stack adds to weak point hits.
Laser ScopeLaser Scope adds flat +100% crit damage per stack on top of that.
CrowbarSlow shots hit healthy enemies first, so the +75% damage is almost always on.
Kjaro's BandM99 hits for 1000% and Supercharge for 4000%, so both clear the 400% threshold.
Runald's BandSame trigger. Pairs with Kjaro's Band and slows what's left.

How to play it

Scope in, hit the weak point, then time the active reload for +500% base damage on the next shot.
Don't release Supercharge without a safe weak point target. The 5s lockout leaves you defenseless.
Chain both Concussion Devices to gain height and distance.