Drop chances

ItemStage 10Stage 50Stage 100Avg count
Baton Parts7.2%9.8%10%0.2
Steel Club Parts7.4%9.5%10%0.2
Steel Knuckles Parts7.5%9.5%9.8%0.2
Shotgun Parts7.3%9.4%9.8%0.17
Bow / Crossbow Parts7.5%9.4%10.0%0.17
Machete Parts7.1%9.4%10%0.19
Steel Sledgehammer Parts7.2%9.3%9.8%0.19
Rifle Parts7.0%9.3%9.8%0.17
Steel Spear Parts7.0%9.3%10%0.19
Handgun Parts6.8%9.2%9.9%0.16
Robotics Parts7.2%9.0%9.3%0.16
Machine Gun Parts7.2%9.0%9.8%0.16
Rocket Launcher Parts7.2%8.8%9.8%0.15
Hunting Knife–3.0%0.77%0.03
Iron Knuckles–2.9%0.74%0.03
Baseball Bat–2.9%0.73%0.03
Iron Spear–2.9%0.78%0.03
Iron Sledgehammer–2.8%0.75%0.03
Double Barrel Shotgun–2.2%0.50%0.02
modMeleeStructuralBrace2.0%2.2%2.1%0.02
modMeleeWeightedHead2.1%2.1%2.1%0.02
Pistol–2.1%0.52%0.02
Buckshot2.2%2.1%1.9%0.47
modMeleeWoodSplitter2.1%2.1%2.0%0.02
KV-47 Machine Gun–2.1%0.53%0.02
Iron Arrow (Ammo)–2.1%0.39%0.16
Bullet Tip1.9%2.0%2.0%0.46
Hunting Rifle–2.0%0.52%0.02
Robotic Sledge–2.0%0.53%0.02
Shotgun AP Slug (Ammo)–2.0%1.7%0.09
Bullet Casing2.0%2.0%2.0%0.45
modMeleeSerratedBlade2.0%2.0%1.9%0.02
modMeleeGraveDigger2.0%2.0%2.1%0.02
HiPower 9mm Ammo–2.0%0.67%0.21
Steel Arrowhead–2.0%2.0%0.15
Gunpowder2.1%2.0%2.1%0.46
modMeleeBunkerBuster1.9%1.9%2.0%0.02
modMeleeClubBurningShaft1.8%1.9%1.9%0.02
HiPower 7.62mm Ammo–1.9%0.55%0.18
modMeleeFortifyingGrip1.9%1.9%1.9%0.02
modMeleeClubBarbedWire1.9%1.8%1.9%0.02
modGunMeleeRadRemover1.7%1.8%1.7%0.02
modGunTriggerGroupAutomatic1.4%1.5%1.5%0.02
modGunScopeLarge1.5%1.5%1.5%0.02
modGunBowPolymerString1.4%1.5%1.5%0.02
modMeleeTemperedBlade1.5%1.5%1.6%0.01
modMeleeDiamondTip1.4%1.4%1.6%0.01
modMeleeErgonomicGrip1.4%1.4%1.4%0.01
modMeleeClubMetalSpikes1.5%1.4%1.5%0.01
modMeleeClubMetalChain1.5%1.4%1.5%0.01
modMeleeIronBreaker1.5%1.3%1.4%0.01
HiPower .44 Magnum Ammo–1.2%0.59%0.09
Iron Crossbow Bolt (Ammo)–1.1%0.35%0.09
Pipe Bomb (Ammo)2.5%1.1%0.27%0.03
Molotov Cocktail (Ammo)2.5%1.1%0.27%0.02
Wooden Bow–0.98%0.24%0.01
Iron Crossbow–0.98%0.30%0.01
modGunMagazineExtender0.69%0.76%0.66%0.01
modGunScopeSmall0.70%0.76%0.76%0.01
modShotgunSawedOffBarrel0.65%0.75%0.71%0.01
modGunFlashlight0.73%0.75%0.70%0.01
modGunDrumMagazineExtender0.75%0.74%0.76%0.01
modGunForegrip0.71%0.73%0.75%0.01
modGunDuckbill0.67%0.73%0.73%0.01
modGunMuzzleBrake0.73%0.72%0.69%0.01
modGunMeleeTheHunter0.71%0.71%0.67%0.01
modGunChoke0.73%0.71%0.71%0.01
modGunTriggerGroupSemi0.76%0.68%0.66%0.01
modGunBipod0.76%0.65%0.73%0.01
modGunBarrelExtender0.55%0.61%0.52%0.01
modGunShotgunTubeExtenderMagazine0.51%0.54%0.48%0.01
modGunTriggerGroupBurst30.53%0.53%0.49%0.01
modGunReflexSight0.59%0.52%0.47%0.01
modGunLaserSight0.55%0.52%0.50%0.01
modGunRetractingStock0.50%0.50%0.53%0
modGunBowArrowRest0.53%0.50%0.48%0.01
modGunSoundSuppressorSilencer0.54%0.48%0.55%0
modGunScopeMedium0.48%0.46%0.49%0
modGunCrippleEm0.45%0.45%0.47%0
9mm Ammo3.3%––0
7.62mm Ammo3.4%––0
Shotgun Shell (Ammo)3.3%––0
Knuckle Wraps9.4%––0
Pipe Baton9.6%––0
Iron Arrowhead2.1%––0
Pipe Pistol4.8%––0
Pipe Machine Gun4.6%––0
Bone Knife9.7%––0
Pipe Rifle4.8%––0
Pipe Shotgun4.6%––0
Primitive Bow4.8%––0
AP 9mm Ammo––1.0%0
Flaming Arrow (Ammo)––0.61%0
Steel Crossbow Bolt (Ammo)––0.73%0
Robotic Turret––0.97%0
Steel Knuckles––1.1%0
Tactical Assault Rifle––0.95%0
Pump Shotgun––0.97%0
Stun Baton––1.1%0
.44 Magnum––0.82%0
AP .44 Magnum Ammo––1.1%0
AP 7.62mm Ammo––1.1%0
Flaming Crossbow Bolt (Ammo)––0.69%0
Compound Bow––0.47%0
Steel Arrow (Ammo)––0.67%0
Stick of Dynamite (Ammo)––0.44%0
Steel Sledgehammer––1.1%0
Machete––1.1%0
Lever Action Rifle––0.97%0
Compound Crossbow––0.46%0
Steel Club––1.1%0
Rocket HE (Ammo)––0.08%0
Rocket Frag (Ammo)––0.08%0
Steel Spear––1.1%0
Grenade (Ammo)––0.47%0

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