M39 Rifle
Military grade semi auto rifle
The M39 Rifle is a semi-automatic weapon in Rust. Its default ammo is the 5.56 Rifle Ammo. It deals 50 damage per shot at 343 shots per minute from its 20-round magazine, the highest damage per second of the 10 semi-automatic weapons. It cannot be crafted, and Supply Drop drops it most often, at 18%.
About the M39 Rifle
A full reload takes 3.3 seconds, and switching to it takes 1 second. Aiming down the sights narrows its spread from 3.1° to 0.1°, 31 times tighter than firing from the hip. Its 15 compatible attachments include a silencer. Mounted in an Auto Turret, it deals 40% of its normal damage.
There are 4 kinds of ammo for it: 5.56 Rifle Ammo, Explosive 5.56 Rifle Ammo, Incendiary 5.56 Rifle Ammo and HV 5.56 Rifle Ammo. With the other ammo types, its damage per second is 167 for the Explosive 5.56 Rifle Ammo and 152 for the HV 5.56 Rifle Ammo. The HV 5.56 Rifle Ammo flies fastest, at 563 m/s, and the Explosive 5.56 Rifle Ammo and Incendiary 5.56 Rifle Ammo slowest, at 281 m/s.
From full condition it fires 400 shots with the 5.56 Rifle Ammo before it breaks, which is 20 full magazines. With the Explosive 5.56 Rifle Ammo, which wears the barrel harder, that drops to 134.
Only one vendor sells it: the Black Market for 400 scrap. In all, 7 loot sources drop it; the full list of where it drops gives the chance for each.
M39 Rifle damage and stats
Loaded with the 5.56 Rifle Ammo, the M39 Rifle deals 152 damage per second. The Incendiary 5.56 Rifle Ammo raises it to 170.
How to repair the M39 Rifle
A full repair at a Repair Bench costs 13 × High Quality Metal, and no blueprint is needed.
×13 M39 Rifle compared with other semi-automatic weapons
Among the 10 semi-automatic weapons it ranks 1st for damage per second, 3rd for damage per shot, 7th for fire rate and 1st for magazine size.
The closest to it in damage per second are the M92 Pistol, Prototype 17, SKS and Semi-Automatic Pistol.
5.56 Rifle Ammo 50 152.1 0.1° 469 ×230–150m 
Explosive 5.56 Rifle Ammo 55 167.3 0.6° 281 ×230–150m 
Incendiary 5.56 Rifle Ammo 56 170.3 0.1° 281 ×230–150m 
HV 5.56 Rifle Ammo 50 152.1 0.1° 563 ×230–150m Damage & DPS are per-shot with the listed ammo; aim cone is the spread in degrees, velocity in m/s.
Variable Zoom Scope –––––+50 %––– 
Burst Module –+30 %-35 %-35 %–-35 %––– 
Extended Magazine –––––––+25 %– 
Weapon flashlight ––––––––– 
Gas Compression Overdrive +20 %-20 %––+30 %+10 %––+20 % 
Holosight ––-20 %–––––– 
Weapon Lasersight ––-20 %-50 %––-90 %–– 
Muzzle Boost –+10 %+0.15+0.5––––– 
Muzzle Brake -15 %–+0.5+2–-50 %-100 %–– 
Simple Handmade Sight ––––––––– 
Oil Filter Silencer -30 %–––-30 %–––– 
Military Silencer -25 %–––-25 %–––– 
Soda Can Silencer -30 %–––-35 %–––– 
8x Zoom Scope –––––+50 %––– 
Targeting Attachment ––––––––– What the M39 Rifle recycles into
A green recycler always gives back 2 × Metal Spring and 25 × High Quality Metal for one.
×2 ×25 
50% ×2 ×30 60% 40% 
×3 ×37 75% 50% 
×1 ×20 40% 60% 
Gold Egg
Large Loot BagThe chance is for a single roll of what the item gives when opened.
Where to find the M39 Rifle
Supply Drop has the best chance at 18%, followed by Present Drop at 9.6% and Elite Crate at 1.2%.
Shops that hand it out
Black MarketShop×1for400 (200–800)
Scrap
Stats checked against the Rust game files on 13 November 2026.
