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Drum Magazine Mod

This large drum magazine increases the ammo capacity on machine guns, but is a little slower to reload.

How this modification works

More ammunition fits before a reload. The modification does not create ammunition: you still need to load it. Percentage capacity bonuses can be rounded when converted to a whole number of rounds.

Lower-quality drums slow reloading. At Q6 the magazine bonus reaches 100% and this modification has no reload-speed penalty. A 25% reduction in reload speed is not the same as a 25% increase in reload time.

Effect values by modification quality
EffectQ1Q2Q3Q4Q5Q6
Magazine capacity+50%+60%+70%+80%+90%+100%
Reload speed-25%-20%-15%-10%-5%0%

Q1-Q6 refer to the modification quality, not the weapon quality. Percentage changes describe a particular statistic; they are not a guaranteed percentage change in your final damage, accuracy or travel time.

Install the finished modification in a compatible item through Modify. A weapon or tool must be in use, and armor must be worn, for its effects to apply. A loose modification in your backpack does not provide its bonus.

Select the item in your inventory, open Modify and place a compatible modification into a free slot. The list shows compatible options, not a set that can all be installed together. Mods sharing a function can conflict. Mod quality changes its bonus; item quality determines the available slots.

Compatible weapons

Modifications that cannot be combined

Stack size
1

How to get it

Where it can appear

  • Supply drop
  • Equipment Rack
  • Ammo Pile, Large
  • Ammo Pile, Medium
  • Ammo Pile, Small
  • Army Truck
  • Buried Supplies
  • Treasure Cache
Show more (17)
  • Duffle Bag
  • Footlocker (Open)
  • Gun Rack
  • Gun Safe
  • Hardened Chest
  • Hidden Stash
  • Infested Cache
  • Lockers
  • Red Munitions Box
  • Police Car
  • Wood Crate
  • Leather Trunk
  • Reinforced Chest
  • Gun Store Box
  • Wall Safe
  • Weapons Bag
  • Zombie loot bag

These containers can roll this item. Loot stage and container rules affect availability; a find is not guaranteed.

Who can sell it

Trader Joel, Trader Jen, Trader Bob, Trader Hugh, Trader Rekt

Stock is random and changes when the trader restocks. Progression can affect which items are offered.

How to craft it

Crafting station: Workbench · Quantity: 1

Materials by quality
IngredientsQ1Q2Q3Q4Q5Q6
Forged Steel202020202020
Scrap Polymers101010101010
Oil444444
Mechanical Parts444444

Base recipe quantities. Perks and world settings can change ingredient costs; check your crafting screen before committing supplies.

What to unlock

  • perkAutoWeaponsDrumMag

Unlocks for components