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Armor Piercing Rounds

Armor Piercing Rounds

Weapon ·Tier 4 · Passive
6400
What it does

Your Bullets have a chance to become unavoidable, piercing through enemies and ignoring their Bullet Resistance.

Innate

Passive — works automatically once bought.

60%
Bullet Velocity
8%
Weapon Damage
55%
Proc chance
When to buy & tricks

Armor Piercing Rounds is a Tier 4 weapon item that gives a chunk of your bullets a chance to turn unavoidable — they punch straight through enemies and ignore Bullet Resistance entirely. It's the gun carry's answer to durability: once the enemy frontline is stacking Bullet Armor and resist, this is the slot that keeps your DPS landing at full value. It builds out of High-Velocity Rounds, so it carries the bullet velocity and weapon damage you'd expect from a late-game power piece.

When to buy

Treat it as a late-game luxury slot for a gun-DPS carry, not an early buy. You want it once the enemy team is actively stacking Bullet Resist — Bullet Armor, resist auras, tanky frontliners like Abrams or Mo & Krill — and your shots are starting to feel like they bounce off. The proc only matters if you put a lot of bullets downrange, so it pays off hardest on fast-firing carries (Wraith, Infernus, Haze, Vindicta) who already win the gun fight and just need their damage to ignore the armor. If the enemy is squishy and not buying resist, the slot is better spent on raw weapon damage or fire rate — this is a counter piece, not a default power spike.

Tricks & counters

Two things make it more than a stat stick. The pierce lets a procced bullet pass through whoever's in front and tag the target behind — handy against body-blocking frontliners and for clipping a lined-up wave plus the hero behind it. And "unavoidable" means those shots can't be dodged, so it cuts through evasion-style bullet avoidance. One big caveat: when the proc fires it just ignores resist, so a target you've pushed into negative Bullet Resist with shred items is treated as plain zero on those shots — you lose the bonus your shred would have given. Build this with raw weapon damage and fire rate, not with resist reduction. Also note that flat bullet immunity (Metal Skin) still negates the hit — unavoidable stops a dodge, it doesn't beat an immunity.

It's a counter, not a staple — buy it when the enemy frontline is stacking Bullet Resist, skip it against squishies who never go tanky.
The proc ignores resist, so it clashes with Bullet Resist shred: a target you've pushed negative is treated as zero on procced shots. Pair it with raw weapon damage instead.
Pierce lets procced bullets hit the hero behind the frontliner — great into body-blockers and lined-up targets.
More bullets, more procs: it's a fast-firing carry's item, near-dead weight on slow burst weapons.

Is Armor Piercing Rounds worth it?

On a fire-rate gun carry against a team stacking Bullet Resist, yes — it keeps your damage landing through Bullet Armor and tanky frontliners and adds velocity plus weapon damage on top. Into a squishy enemy team that never buys resist, the 6400 souls is better spent on raw damage or fire rate.

Does it stack with Bullet Resist shred items?

Not well. When the proc fires it ignores the target's resist outright, so any negative resist you built with shred items gets treated as zero on those shots and you actually lose damage. Run it with weapon-damage scaling, not with resist reduction.

Built by
Best with Ivy ~55.1%
build share · win rate when built
Performance
~53.6% Win rate
28.8% Build rate
-1.3 vs last patch
18' avg buy
Win rate by rank
Ini
See
Alc
Arc
Rit
Ete
Cost & valueper 1000 souls
Builds on High-Velocity Rounds 800 +5600
Bullet Velocity 60% 9.4/1k
Weapon Damage 8% 1.3/1k
Tier bonuses scale with souls spent in the tree →
Upgrade path
Upgrades from
This item
Armor Piercing Rounds6400
Related mechanics
Update history1
12-16-2025 UpdateDec 16, 2025
  • When Armor Piercing Rounds Proc's, Plated Armor can no longer stop the Proc'd Bullet.

Built-by, win rate, build rate and top hero are sample until the match API is wired in. Effect, cost, value and the build tree are real client data.

Raw dataproperties, shop fields & API

identity

id
upgrade_aprounds
slug
armor-piercing-rounds
token
upgrade_aprounds
kind
upgrade
updatedAt
2026-06-06T16:23:38.392Z

shop

category
weapon
tier
4
cost
6400
groupLabel
Bullet Velocity
filters
EShopFilterClipSize, EShopFilterWeaponDamage
componentIds
upgrade_high_velocity_mag
upgradeIds

properties (3)

labelkeyvalue
Weapon DamageBaseAttackDamagePercent8%
Bullet VelocityBonusBulletSpeedPercent60%
Proc chanceProcChance55%

Upgrades

lvlAPupgrades
11Bullet Velocity +55, Proc chance +20, Weapon Damage +30