Sidewinder SMG

v1.0.0·Updated 2026-01-10

SMG but bullpup and compact

About this mod Author’s original text

Sidewinder Submachine Gun

The Sidewinder SMG was an unusual experimental submachine gun developed in the 60s. Basically the Viper but much more cooler!

The ability to pivot the magazine well in any direction makes it for a very interesting manual of arms, either by tucking it underneath the arm to fire it one handed or just firing it out of a vehicle like a car or motorcycle.

There are 2 official designs which is the 9mm Sten Magazine and.45 ACP Grease Gun Magazines, to make use of the abundant magazines out there and also a funny cursed.30 Carbine version. All models also come with progressive trigger, being one of the few open bolt submachine guns to have this.

It takes muzzle devices as well as having a hidden weaver rail at the top of the receiver. The stock can be pulled back and the magazine well pivot anywhere, hence sidewinder! Do note that the point stock is weird because that's how it is with bullpups in H3.

Features

  • Sidewinder experimental submachine gun in 3 different chamberings!
  • 9mm (Uses Sten magazines),.45 ACP (Grease Gun Mags) and.30 Carbine (M1 Carbine magazines)
  • Has a hidden "Weaver" rail for that old school look
  • Magazine well area can be rotated to any degree!
  • Stocks can also be pulled back!
  • Can be found in Firearm > SMG

Note

  • Due to its funky bullpup position, it suffers a bit from the vanilla bullpup situation.

Model from Akinaro; Thank you Tweedy for the support!

Install & use Install: BepInEx plugin

  1. The archive from playbuff is the mod itself — usually a BepInEx plugin (a .dll or a plugin folder once unzipped).
  2. Recommended: use a community mod manager (such as r2modman) — pick this game, import the mod, and the manager sets up BepInEx and its dependencies for you.
  3. Manual route: install the BepInEx loader in the game folder, then drop the unzipped .dll or plugin folder into BepInEx/plugins/.
  4. Launch the game — the BepInEx console logs every plugin it loads; seeing this mod in the log means it is installed.

Mods with listed dependencies need those installed too, or they will not load. Options are usually changed in-game or in the plugin's config file.

Dependencies

Install these first, or the mod will not work:

devyndamonster-OtherLoadercityrobo-OpenScripts2

File & checksum

Filename
Sidewinder_SMG-1.0.0.zip
File size
31.3 MiB