Custom SMG
A rapid-firing Machine Gun. Sacrifices accuracy and distance for speed.
The Custom SMG is an automatic weapon in Rust. Its default ammo is the Pistol Bullet. It deals 30 damage per shot at 600 shots per minute from its 30-round magazine. You craft it at a Level 2 Workbench, and its blueprint costs 100 scrap to research.
About the Custom SMG
A full reload takes 4 seconds, and switching to it takes 1 second. Aiming down the sights narrows its spread from 2.3° to 0.5°, 4.6 times tighter than firing from the hip. Its 15 compatible attachments include a silencer. Mounted in an Auto Turret, it deals 35% of its normal damage.
There are 3 kinds of ammo for it: Pistol Bullet, Incendiary Pistol Bullet and HV Pistol Ammo. With the remaining ammo type, its damage per second is 130 for the HV Pistol Ammo. The HV Pistol Ammo flies fastest, at 320 m/s, and the Incendiary Pistol Bullet slowest, at 180 m/s.
From full condition it fires 400 shots with the Pistol Bullet before it breaks, which is 13.3 full magazines. Recycling it returns the SMG Body (50%) and Metal Spring (50%) only by chance.
On the tech tree it sits behind 15 other unlocks: Muzzle Boost, Flame Thrower, Catapult, Ballista, Battering Ram, Python Revolver and 9 more. Only one vendor sells it: the Travelling Vendor for 130 to 150 scrap. In all, 27 loot sources drop it; the full list of where it drops gives the chance for each.
Custom SMG damage and stats
Loaded with the Pistol Bullet, the Custom SMG deals 130 damage per second. The Incendiary Pistol Bullet raises it to 146.
How to craft the Custom SMG
Crafting one takes 25 seconds at a Level 2 Workbench and costs 8 × High Quality Metal, 1 × SMG Body and 1 × Metal Spring.
8 
1 
1 
How to get the Custom SMG blueprint
Research it for 100 scrap, or unlock it on the Level 2 tech tree for 16 Blueprint Pages in total.
1 Item 
100 Scrap Blueprint 100 
Node 
1 Blueprint Page Unlocked 16 How to repair the Custom SMG
A full repair at a Repair Bench costs 3 × High Quality Metal, and you need its blueprint.
×3 Custom SMG compared with other automatic weapons
Among the 11 automatic weapons it ranks 9th for damage per second, 10th for damage per shot, 2nd for fire rate and 5th for magazine size.
The closest to it in damage per second are the MP5A4, LR-300 Assault Rifle, M16A2 and Thompson.
Pistol Bullet 30 130.4 0.5° 240 ×27–42m 
Incendiary Pistol Bullet 33.6 146.1 0.5° 180 ×27–42m 
HV Pistol Ammo 30 130.4 0.5° 320 ×27–42m 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 Custom SMG recycles into
A green recycler always gives back 4 × High Quality Metal for one.
×4 50% 50% ×4 80% 60% 60% 
×6 75% 75% 
×3 20% 40% 40% 
Large Present 6.7%×1 The chance is for a single roll of what the item gives when opened.
Where to find the Custom SMG
Supply Drop has the best chance at 39%, followed by Present Drop at 22% and Elite Crate at 2.8%.
Shops that hand it out
Travelling VendorShop×1for130–150Scrap
StablehandShop×1paid for an animal, more for a better one
Stats checked against the Rust game files on 13 November 2026.
