diff --git a/core/src/mindustry/content/Blocks.java b/core/src/mindustry/content/Blocks.java
index 267f34cd09..b6daafd228 100644
--- a/core/src/mindustry/content/Blocks.java
+++ b/core/src/mindustry/content/Blocks.java
@@ -1884,6 +1884,7 @@ public class Blocks{
             requirements(Category.distribution, with(Items.beryllium, 1));
             health = 90;
             speed = 4f;
+            underBullets = true;
             researchCost = with(Items.beryllium, 5);
         }};
 
@@ -1892,6 +1893,7 @@ public class Blocks{
             health = 140;
             speed = 4f;
             armored = true;
+            underBullets = true;
             researchCost = with(Items.beryllium, 300, Items.tungsten, 100);
         }};
 
@@ -1900,6 +1902,8 @@ public class Blocks{
             health = 90;
             speed = 4f;
             regionRotated1 = 1;
+            solid = false;
+            underBullets = true;
             researchCost = with(Items.beryllium, 30);
         }};
 
@@ -1907,6 +1911,8 @@ public class Blocks{
             requirements(Category.distribution, with(Items.graphite, 8, Items.beryllium, 8));
             health = 90;
             speed = 4f;
+            solid = false;
+            underBullets = true;
             researchCostMultiplier = 1.5f;
         }};
 
@@ -1914,6 +1920,8 @@ public class Blocks{
             requirements(Category.distribution, with(Items.beryllium, 20));
             health = 90;
             speed = 4f;
+            buildCostMultiplier = 2f;
+            underBullets = true;
             researchCostMultiplier = 0.3f;
         }};
 
@@ -1921,6 +1929,8 @@ public class Blocks{
             requirements(Category.distribution, with(Items.graphite, 20, Items.silicon, 20, Items.tungsten, 10));
             health = 120;
             speed = 4f;
+            solid = false;
+            underBullets = true;
             regionRotated1 = 1;
         }};
 
@@ -1935,6 +1945,7 @@ public class Blocks{
             hasPower = true;
             consumesPower = true;
             conductivePower = true;
+            underBullets = true;
             baseEfficiency = 1f;
             consumePower(1f / 60f);
         }};
@@ -1949,6 +1960,8 @@ public class Blocks{
             consumesPower = true;
             conductivePower = true;
             baseEfficiency = 1f;
+            underBullets = true;
+            solid = false;
             consumePower(3f / 60f);
         }};
 
@@ -2084,6 +2097,7 @@ public class Blocks{
             liquidPressure = 1.03f;
             health = 250;
             researchCostMultiplier = 3;
+            underBullets = true;
         }};
 
         //TODO is this necessary? junctions are not good design
@@ -2094,13 +2108,16 @@ public class Blocks{
             health = 260;
             ((Conduit)reinforcedConduit).junctionReplacement = this;
             researchCostMultiplier = 1;
+            solid = false;
+            underBullets = true;
         }};
 
         reinforcedBridgeConduit = new DirectionLiquidBridge("reinforced-bridge-conduit"){{
-            requirements(Category.liquid, with(Items.graphite, 6, Items.beryllium, 10));
+            requirements(Category.liquid, with(Items.graphite, 8, Items.beryllium, 20));
             range = 4;
             hasPower = false;
             researchCostMultiplier = 1;
+            underBullets = true;
 
             ((Conduit)reinforcedConduit).rotBridgeReplacement = this;
         }};
@@ -2111,9 +2128,9 @@ public class Blocks{
             newDrawing = true;
             liquidPadding = 3f/4f;
             researchCostMultiplier = 3;
+            underBullets = true;
         }};
 
-        //TODO is there a need for a container if unloaders can unload 3x3s?
         reinforcedLiquidContainer = new LiquidRouter("reinforced-liquid-container"){{
             requirements(Category.liquid, with(Items.tungsten, 10, Items.beryllium, 16));
             liquidCapacity = 1000f;
@@ -2121,6 +2138,7 @@ public class Blocks{
             newDrawing = true;
             liquidPadding = 6f/4f;
             researchCostMultiplier = 4;
+            underBullets = true;
         }};
 
         reinforcedLiquidTank = new LiquidRouter("reinforced-liquid-tank"){{
@@ -2129,6 +2147,7 @@ public class Blocks{
             liquidCapacity = 2700f;
             newDrawing = true;
             liquidPadding = 2f;
+            underBullets = true;
         }};
 
         //endregion
@@ -4116,7 +4135,7 @@ public class Blocks{
             requirements(Category.units, with(Items.silicon, 200, Items.beryllium, 250));
             size = 3;
             configurable = false;
-            plans.add(new UnitPlan(UnitTypes.stell, 60f * 60f * 1f, with(Items.beryllium, 50f, Items.silicon, 70f)));
+            plans.add(new UnitPlan(UnitTypes.stell, 60f * 60f * 1f, with(Items.beryllium, 50f, Items.silicon, 60f)));
             researchCost = with(Items.beryllium, 200, Items.graphite, 80, Items.silicon, 80);
             regionSuffix = "-dark";
             fogRadius = 3;
@@ -4251,6 +4270,7 @@ public class Blocks{
             canOverdrive = false;
             health = 800;
             researchCostMultiplier = 4f;
+            underBullets = true;
         }};
 
         reinforcedPayloadRouter = new PayloadRouter("reinforced-payload-router"){{
@@ -4259,6 +4279,7 @@ public class Blocks{
             health = 800;
             canOverdrive = false;
             researchCostMultiplier = 4f;
+            underBullets = true;
         }};
 
         payloadMassDriver = new PayloadMassDriver("payload-mass-driver"){{
diff --git a/core/src/mindustry/entities/bullet/BulletType.java b/core/src/mindustry/entities/bullet/BulletType.java
index 877dd72bc0..3ab4334749 100644
--- a/core/src/mindustry/entities/bullet/BulletType.java
+++ b/core/src/mindustry/entities/bullet/BulletType.java
@@ -531,6 +531,10 @@ public class BulletType extends Content implements Cloneable{
     }
 
     public @Nullable Bullet create(@Nullable Entityc owner, Team team, float x, float y, float angle, float damage, float velocityScl, float lifetimeScl, Object data, @Nullable Mover mover){
+        return create(owner, team, x, y, angle, damage, velocityScl, lifetimeScl, data, mover, -1f, -1f);
+    }
+
+    public @Nullable Bullet create(@Nullable Entityc owner, Team team, float x, float y, float angle, float damage, float velocityScl, float lifetimeScl, Object data, @Nullable Mover mover, float aimX, float aimY){
         if(spawnUnit != null){
             //don't spawn units clientside!
             if(!net.client()){
@@ -555,6 +559,7 @@ public class BulletType extends Content implements Cloneable{
         bullet.owner = owner;
         bullet.team = team;
         bullet.time = 0f;
+        bullet.aimTile = world.tileWorld(aimX, aimY);
         bullet.initVel(angle, speed * velocityScl);
         if(backMove){
             bullet.set(x - bullet.vel.x * Time.delta, y - bullet.vel.y * Time.delta);
diff --git a/core/src/mindustry/entities/comp/BuildingComp.java b/core/src/mindustry/entities/comp/BuildingComp.java
index ed6501348a..828137e91b 100644
--- a/core/src/mindustry/entities/comp/BuildingComp.java
+++ b/core/src/mindustry/entities/comp/BuildingComp.java
@@ -50,7 +50,7 @@ import static mindustry.Vars.*;
 @Component(base = true)
 abstract class BuildingComp implements Posc, Teamc, Healthc, Buildingc, Timerc, QuadTreeObject, Displayable, Senseable, Controllable, Sized{
     //region vars and initialization
-    static final float timeToSleep = 60f * 1, timeToUncontrol = 60f * 6;
+    static final float timeToSleep = 60f * 1, recentDamageTime = 60f * 5f;
     static final ObjectSet<Building> tmpTiles = new ObjectSet<>();
     static final Seq<Building> tempBuilds = new Seq<>();
     static final BuildTeamChangeEvent teamChangeEvent = new BuildTeamChangeEvent();
@@ -91,6 +91,7 @@ abstract class BuildingComp implements Posc, Teamc, Healthc, Buildingc, Timerc,
     transient float healSuppressionTime = -1f;
     transient float lastHealTime = -120f * 10f;
 
+    private transient float lastDamageTime = -recentDamageTime;
     private transient float timeScale = 1f, timeScaleDuration;
     private transient float dumpAccum;
 
@@ -406,6 +407,10 @@ abstract class BuildingComp implements Posc, Teamc, Healthc, Buildingc, Timerc,
         return lastHealTime + duration >= Time.time;
     }
 
+    public boolean wasRecentlyDamaged(){
+        return lastDamageTime + recentDamageTime >= Time.time;
+    }
+
     public Building nearby(int dx, int dy){
         return world.build(tile.x + dx, tile.y + dy);
     }
@@ -1781,6 +1786,7 @@ abstract class BuildingComp implements Posc, Teamc, Healthc, Buildingc, Timerc,
         if(dead()) return;
 
         float dm = state.rules.blockHealth(team);
+        lastDamageTime = Time.time;
 
         if(Mathf.zero(dm)){
             damage = health + 1;
diff --git a/core/src/mindustry/entities/comp/BulletComp.java b/core/src/mindustry/entities/comp/BulletComp.java
index 4873abfba4..3fd70d2ec0 100644
--- a/core/src/mindustry/entities/comp/BulletComp.java
+++ b/core/src/mindustry/entities/comp/BulletComp.java
@@ -37,6 +37,7 @@ abstract class BulletComp implements Timedc, Damagec, Hitboxc, Teamc, Posc, Draw
     @ReadOnly
     private float rotation;
 
+    transient @Nullable Tile aimTile;
     transient @Nullable Mover mover;
     transient boolean absorbed, hit;
     transient @Nullable Trail trail;
@@ -173,7 +174,11 @@ abstract class BulletComp implements Timedc, Damagec, Hitboxc, Teamc, Posc, Draw
                 }
             }
 
-            if(build != null && isAdded() && build.collide(self()) && type.testCollision(self(), build)
+            if(build != null && isAdded() &&
+                //should underBullet detection be disabled for piercing bullets?
+                //|| type.pierceBuilding
+                (!build.block.underBullets || (aimTile != null && aimTile.build == build))
+                && build.collide(self()) && type.testCollision(self(), build)
                 && !build.dead() && (type.collidesTeam || build.team != team) && !(type.pierceBuilding && hasCollided(build.id))){
 
                 boolean remove = false;
diff --git a/core/src/mindustry/type/Weapon.java b/core/src/mindustry/type/Weapon.java
index a73144914d..4c6de9b94d 100644
--- a/core/src/mindustry/type/Weapon.java
+++ b/core/src/mindustry/type/Weapon.java
@@ -402,7 +402,7 @@ public class Weapon implements Cloneable{
         lifeScl = bullet.scaleVelocity ? Mathf.clamp(Mathf.dst(shootX, shootY, mount.aimX, mount.aimY) / bullet.range) : 1f,
         angle = angleOffset + shootAngle + Mathf.range(inaccuracy);
 
-        mount.bullet = bullet.create(unit, unit.team, bulletX, bulletY, angle, (1f - velocityRnd) + Mathf.random(velocityRnd), lifeScl, mover);
+        mount.bullet = bullet.create(unit, unit.team, bulletX, bulletY, angle, -1f, (1f - velocityRnd) + Mathf.random(velocityRnd), lifeScl, null, mover, mount.aimX, mount.aimY);
 
         if(!continuous){
             shootSound.at(bulletX, bulletY, Mathf.random(soundPitchMin, soundPitchMax));
diff --git a/core/src/mindustry/type/weapons/RepairBeamWeapon.java b/core/src/mindustry/type/weapons/RepairBeamWeapon.java
index 9f98374be0..1a8b559904 100644
--- a/core/src/mindustry/type/weapons/RepairBeamWeapon.java
+++ b/core/src/mindustry/type/weapons/RepairBeamWeapon.java
@@ -33,6 +33,7 @@ public class RepairBeamWeapon extends Weapon{
     public float pulseRadius = 6f;
     public float pulseStroke = 2f;
     public float widthSinMag = 0f, widthSinScl = 4f;
+    public float recentDamageMultiplier = 0.1f;
 
     public TextureRegion laser, laserEnd, laserTop, laserTopEnd;
 
@@ -150,7 +151,8 @@ public class RepairBeamWeapon extends Weapon{
         }
 
         if(canShoot && mount.target instanceof Healthc u){
-            u.heal(repairSpeed * heal.strength * Time.delta + fractionRepairSpeed * heal.strength * Time.delta * u.maxHealth() / 100f);
+            float baseAmount = repairSpeed * heal.strength * Time.delta + fractionRepairSpeed * heal.strength * Time.delta * u.maxHealth() / 100f;
+            u.heal((u instanceof Building b && b.wasRecentlyDamaged() ? recentDamageMultiplier : 1f) * baseAmount);
         }
     }
 
diff --git a/core/src/mindustry/world/Block.java b/core/src/mindustry/world/Block.java
index 5b035bffb6..17ddff9dc7 100644
--- a/core/src/mindustry/world/Block.java
+++ b/core/src/mindustry/world/Block.java
@@ -90,6 +90,8 @@ public class Block extends UnlockableContent implements Senseable{
     public boolean solidifes;
     /** if true, this counts as a non-solid block to this team. */
     public boolean teamPassable;
+    /** if true, this block cannot be hit by bullets unless explicitly targeted. */
+    public boolean underBullets;
     /** whether this is rotatable */
     public boolean rotate;
     /** if rotate is true and this is false, the region won't rotate when drawing */
diff --git a/core/src/mindustry/world/blocks/ConstructBlock.java b/core/src/mindustry/world/blocks/ConstructBlock.java
index 1686383977..da823fe764 100644
--- a/core/src/mindustry/world/blocks/ConstructBlock.java
+++ b/core/src/mindustry/world/blocks/ConstructBlock.java
@@ -38,7 +38,7 @@ public class ConstructBlock extends Block{
         super("build" + size);
         this.size = size;
         update = true;
-        health = 20;
+        health = 10;
         consumesTap = true;
         solidifes = true;
         inEditor = false;
diff --git a/core/src/mindustry/world/blocks/defense/turrets/Turret.java b/core/src/mindustry/world/blocks/defense/turrets/Turret.java
index d6d61654f9..41f86defc1 100644
--- a/core/src/mindustry/world/blocks/defense/turrets/Turret.java
+++ b/core/src/mindustry/world/blocks/defense/turrets/Turret.java
@@ -501,7 +501,8 @@ public class Turret extends ReloadTurret{
 
             float lifeScl = type.scaleVelocity ? Mathf.clamp(Mathf.dst(bulletX, bulletY, targetPos.x, targetPos.y) / type.range, minRange / type.range, range() / type.range) : 1f;
 
-            handleBullet(type.create(this, team, bulletX, bulletY, shootAngle, 1f + Mathf.range(velocityInaccuracy), lifeScl, mover), xOffset, yOffset, angleOffset);
+            //TODO aimX / aimY for multi shot turrets?
+            handleBullet(type.create(this, team, bulletX, bulletY, shootAngle, -1f, 1f + Mathf.range(velocityInaccuracy), lifeScl, null, mover, targetPos.x, targetPos.y), xOffset, yOffset, angleOffset);
 
             (shootEffect == Fx.none ? type.shootEffect : shootEffect).at(bulletX, bulletY, rotation, type.hitColor);
             (smokeEffect == Fx.none ? type.smokeEffect : smokeEffect).at(bulletX, bulletY, rotation, type.hitColor);
diff --git a/core/src/mindustry/world/blocks/payloads/PayloadRouter.java b/core/src/mindustry/world/blocks/payloads/PayloadRouter.java
index b16b024ba0..9f6c671985 100644
--- a/core/src/mindustry/world/blocks/payloads/PayloadRouter.java
+++ b/core/src/mindustry/world/blocks/payloads/PayloadRouter.java
@@ -98,7 +98,7 @@ public class PayloadRouter extends PayloadConveyor{
             if(type == LAccess.config){
                 rotation = (int)p1;
                 //when manually controlled, routers do not turn automatically for a while, same as turrets
-                controlTime = Building.timeToUncontrol;
+                controlTime = 60f * 6f;
             }
         }