Launcher Heavy Armor Mastery

1.  Bonus Strength value from Mastery has been increased

 M-137 Gatling Gun

1.  Immobility value of enemies hit by the bullet increased

 BBQ

1.  MP Consumption, Cooldown decreased
2.  Attack Power Increased

 M-3 Flamethrower

1.  Attack Power adjusted
2.  Increased Immobility value of enemies hit by Flamethrower

 Cannon Ball

1.  Charge Removed
2.  It will now always be used as full charge 

 Flame Pillar

1.  Attack Power adjusted
2.  Increased Immobility value of enemies hit by Flame Strike

 Steyr AMR

1.  Attack Power slightly increased
2. Explosion range increased (100 → 140)  

 FM-31 Grenade Launcher

1.  Bullet shoot interval, knock back distance decreased

 FM-92 mk2 Lancer

1.  Shot concentration rate of missiles launched separately has been increased

•   Shot Concentration Rate +20%

 FM-92 mk2 Lancer SW

1.  It will now prioritize monsters by grade within the attack range

 Arctic Booster

1.  Multi Hit interval by 0.17 and duration by 0.5s 
2.  Attack Power value has been adjusted in line with the Multi Hit interval reduction.

 BBQ Upgrade

1.  Changes from hit-grab to normal grab upon learning the skill

 Heavy Firearm Mastery

•   Duration will no longer be decreased while using a skill
•   Bonus Attack Power buff duration has been increased
•   Buff is now accumulative

 Eagle Eye

1.  Buff is now accumulative

 Overheat

1.  Buff is now accumulative

 Quantum Bomb

1.  Attack Power will now be calculated as percent damage + fixed damage

 X-1 Extruder

1.  Attack Power will now be calculated as percent damage + fixed damage

 Ancient Trigger

1.  Attack Power will now be calculated as percent damage + fixed damage