Drop chances

ItemStage 10Stage 50Stage 100Avg count
Buckshot9.9%10.0%10%3
Steel Arrowhead–9.9%9.6%1.11
Gunpowder9.7%9.8%9.9%2.94
Bullet Casing9.5%9.8%9.7%2.96
Bullet Tip9.5%9.7%9.6%2.95
Shotgun AP Slug (Ammo)–9.7%8.3%0.61
HiPower 9mm Ammo–9.5%3.0%1.56
Iron Arrow (Ammo)–9.4%1.9%1.07
HiPower 7.62mm Ammo–9.3%2.9%1.23
Steel Club Parts4.6%6.0%6.2%0.12
Steel Sledgehammer Parts4.6%5.9%6.2%0.12
Machete Parts4.7%5.9%6.3%0.11
Steel Knuckles Parts4.7%5.8%6.2%0.11
Baton Parts4.5%5.8%6.5%0.12
Robotics Parts4.7%5.8%6.0%0.1
Steel Spear Parts4.5%5.8%6.2%0.11
Shotgun Parts4.5%5.8%5.7%0.1
Rifle Parts4.4%5.8%6.1%0.1
Bow / Crossbow Parts4.5%5.7%6.0%0.1
Rocket Launcher Parts4.5%5.7%5.9%0.1
Handgun Parts4.7%5.6%6.1%0.1
Machine Gun Parts4.5%5.5%6.0%0.1
HiPower .44 Magnum Ammo–5.4%3.1%0.61
Iron Crossbow Bolt (Ammo)–5.4%1.7%0.6
Explosive Magazine3.1%3.3%3.1%0.03
Rifle World3.1%3.2%3.3%0.03
Tactical Warfare3.0%3.2%3.1%0.03
Shotgun Weekly3.1%3.0%3.0%0.03
Handgun Magazine3.1%3.0%3.2%0.03
Baseball Bat–1.7%0.43%0.02
Iron Knuckles–1.7%0.41%0.02
Iron Spear–1.6%0.35%0.02
Hunting Knife–1.5%0.45%0.02
Iron Sledgehammer–1.5%0.46%0.01
Pistol–1.2%0.32%0.01
Hunting Rifle–1.1%0.26%0.01
Robotic Sledge–1.1%0.29%0.01
KV-47 Machine Gun–1.1%0.30%0.01
Double Barrel Shotgun–1.1%0.30%0.01
modMeleeGraveDigger0.99%1.0%1.0%0.01
modMeleeWeightedHead0.92%0.99%0.97%0.01
modMeleeStructuralBrace0.92%0.99%1.0%0.01
modMeleeFortifyingGrip0.95%0.97%0.92%0.01
modMeleeClubBarbedWire0.90%0.93%0.87%0.01
modMeleeSerratedBlade0.97%0.91%0.97%0.01
modMeleeBunkerBuster0.90%0.89%0.91%0.01
modMeleeWoodSplitter0.99%0.87%0.91%0.01
modMeleeClubBurningShaft0.86%0.83%0.80%0.01
modGunMeleeRadRemover0.89%0.83%0.85%0.01
modMeleeDiamondTip0.71%0.76%0.68%0.01
modGunScopeLarge0.70%0.74%0.65%0.01
modMeleeClubMetalSpikes0.65%0.71%0.67%0.01
modGunBowPolymerString0.64%0.70%0.76%0.01
modMeleeTemperedBlade0.64%0.69%0.74%0.01
modMeleeErgonomicGrip0.71%0.66%0.69%0.01
modGunTriggerGroupAutomatic0.72%0.63%0.72%0.01
modMeleeClubMetalChain0.69%0.62%0.72%0.01
Pipe Bomb (Ammo)1.4%0.61%0.18%0.02
modMeleeIronBreaker0.67%0.60%0.59%0.01
Molotov Cocktail (Ammo)1.3%0.56%0.16%0.01
Wooden Bow–0.50%0.16%0
Sniper Vol 30.43%0.47%0.41%0
Iron Crossbow–0.44%0.11%0
Pistol Pete Vol 30.37%0.41%0.36%0
Automatic Weapons Handbook Vol 20.39%0.40%0.42%0
Shotgun Messiah Vol 40.38%0.40%0.33%0
Magnum Enforcer Vol 20.38%0.40%0.40%0
Sniper Vol 50.38%0.39%0.37%0
Shotgun Messiah Vol 30.42%0.39%0.36%0
Pistol Pete Vol 40.40%0.39%0.36%0
Urban Combat Vol 40.36%0.39%0.35%0
Urban Combat Vol 30.40%0.38%0.37%0
Sniper Vol 20.40%0.38%0.31%0
modGunDrumMagazineExtender0.33%0.38%0.34%0
Pistol Pete Vol 70.38%0.38%0.35%0
modGunMuzzleBrake0.34%0.38%0.32%0
Urban Combat Vol 20.35%0.38%0.38%0
Pistol Pete Vol 50.39%0.37%0.43%0
Shotgun Messiah Vol 50.39%0.37%0.37%0
Urban Combat Vol 50.36%0.37%0.42%0
Pistol Pete Vol 60.36%0.37%0.40%0
Urban Combat Vol 10.31%0.37%0.38%0
Magnum Enforcer Vol 70.31%0.37%0.35%0
Pistol Pete Vol 20.37%0.37%0.38%0
Shotgun Messiah Vol 60.38%0.36%0.37%0
Magnum Enforcer Vol 30.40%0.36%0.36%0
Urban Combat Vol 70.35%0.36%0.39%0
Shotgun Messiah Vol 10.30%0.36%0.36%0
modGunBipod0.34%0.36%0.32%0
Sniper Vol 10.38%0.36%0.40%0
Sniper Vol 70.38%0.36%0.33%0
Automatic Weapons Handbook Vol 30.34%0.35%0.33%0
Magnum Enforcer Vol 60.43%0.35%0.40%0
Shotgun Messiah Vol 20.33%0.35%0.35%0
modShotgunSawedOffBarrel0.35%0.35%0.33%0
Automatic Weapons Handbook Vol 40.38%0.35%0.38%0
Automatic Weapons Handbook Vol 50.38%0.34%0.39%0
modGunMagazineExtender0.33%0.34%0.33%0
Automatic Weapons Handbook Vol 10.38%0.34%0.33%0
Shotgun Messiah Vol 70.33%0.34%0.40%0
Sniper Vol 60.37%0.34%0.36%0
modGunFlashlight0.35%0.34%0.33%0
Magnum Enforcer Vol 50.39%0.33%0.39%0
Automatic Weapons Handbook Vol 60.35%0.33%0.35%0
Urban Combat Vol 60.35%0.33%0.41%0
Magnum Enforcer Vol 10.42%0.32%0.35%0
modGunTriggerGroupSemi0.31%0.32%0.36%0
Magnum Enforcer Vol 40.38%0.32%0.39%0
modGunScopeSmall0.31%0.32%0.34%0
modGunDuckbill0.36%0.32%0.37%0
Sniper Vol 40.36%0.31%0.35%0
Pistol Pete Vol 10.36%0.31%0.33%0
modGunForegrip0.27%0.31%0.32%0
Automatic Weapons Handbook Vol 70.34%0.31%0.38%0
modGunMeleeTheHunter0.29%0.30%0.33%0
modGunRetractingStock0.25%0.28%0.21%0
modGunChoke0.32%0.28%0.36%0
modGunScopeMedium0.21%0.27%0.22%0
modGunShotgunTubeExtenderMagazine0.23%0.27%0.25%0
modGunTriggerGroupBurst30.24%0.24%0.27%0
modGunBowArrowRest0.26%0.23%0.25%0
modGunCrippleEm0.22%0.23%0.22%0
modGunBarrelExtender0.24%0.23%0.24%0
modGunSoundSuppressorSilencer0.25%0.23%0.26%0
modGunLaserSight0.23%0.22%0.23%0
modGunReflexSight0.25%0.20%0.21%0
Knuckle Wraps5.2%––0
9mm Ammo16%––0
7.62mm Ammo16%––0
Pipe Pistol2.6%––0
Iron Arrowhead9.7%––0
Bone Knife5.2%––0
Shotgun Shell (Ammo)16%––0
Pipe Shotgun2.5%––0
Pipe Baton5.4%––0
Pipe Machine Gun2.5%––0
Primitive Bow2.6%––0
Pipe Rifle2.7%––0
AP 7.62mm Ammo––5.2%0
Lever Action Rifle––0.54%0
Flaming Arrow (Ammo)––3.2%0
AP .44 Magnum Ammo––5.2%0
Flaming Crossbow Bolt (Ammo)––3.1%0
Steel Crossbow Bolt (Ammo)––3.2%0
Stun Baton––0.63%0
AP 9mm Ammo––5.2%0
Steel Knuckles––0.57%0
Compound Bow––0.26%0
Robotic Turret––0.52%0
Tactical Assault Rifle––0.52%0
Pump Shotgun––0.56%0
Steel Arrow (Ammo)––3.4%0
.44 Magnum––0.45%0
Steel Club––0.57%0
Grenade (Ammo)––0.25%0
Steel Spear––0.59%0
Compound Crossbow––0.23%0
Machete––0.57%0
Steel Sledgehammer––0.58%0
Stick of Dynamite (Ammo)––0.19%0

Average count per open at loot stage 50. From 40,000 simulated opens per stage; perks that raise loot are not counted.