CMMA MR39

“The flames of liberty and high aspirations have not yet been extinguished.”

Original address:

Prefix:

Mechanical Legion

Far Harbor

Nuka World DLC

Ammunition expansion items (optional but supported for compatible use):

Weapons Overhaul Systems (WO-R-III) (optional, but supported for compatible use):

Updated Chinese address on October 7th:

Updated on April 6, 2026:

1.00.5 - Fixed '76 spirit to now work in non-hostile state.

Made a downgrade for the old version.

Updated on August 9th:

Version 1.00.3

1.00.3 - Fixed projectiles being fired.

Updated on May 11th:

1.00.2 - Fixed Big Meanie not unlocking new save skins. Old archives have fixed scripts and can only be fixed by adjusting the global.

The BA2 version (applicable to the next-generation version of the game) and the component version (applicable to the 163 version of the game) files have been uploaded. You can choose one of the two to download and install according to your own game version.

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Acknowledgments and Dedication:

Dak's Discord - Great for networking.

Degenerate Dak - Regular art support.

Shiagur - Regular art support.

Ophelia Neoma - Green explosions and flaming explosions. Believe it or not, her assets are major assets because they work so well.

Diacute - moral support.

iamtenspeed - Screenies & Moral Support

Navarro - Sound. (Now there is grace and it is part of DP.

That mod that was prick-formerly-called-as-Aryck-The.One - yet another mod that you didn't authorize to exist.

Support me on PATREON

(I make no guarantees about output, nor do I keep content behind a paywall. This is for donations only.

background:

The CMMA (Commonwealth Minutemen Arms mfg.) MR39 "Riveter" machine gun was an evolved automatic rifle based on the original Chauchat light machine gun, developed as a stopgap wartime expedient in the late stages of World War I, and was the first light machine gun to be widely adopted. The Rivet Gun was the result of numerous remodellings, modifications, and simplifications from pre-war collaborations between civilian enthusiasts and small gunmakers, solving most of the design difficulties while remaining a weapon simple to produce and function. Surviving examples were later discovered by survivors in the harsh post-war wastelands.

The Rivet Gun's reputation lies in its controlled and accurate automatic firing of long-range continuous bursts of full-power rifle cartridges with a steady and crisp rhythm. Unlike the original Chauchat, it was modified to fire the common 308 round and had a closed-bolt short-recoil action and longer bolt travel, maximized by its non-bottoming telescopic bolt; reduced recoil, but offset by the low rate of fire. It retains a simple solid metal tube mated to a sheet metal under-receiver construction, a familiar set of trigger grips close to those of an AR15, and a front seat with a simple trigger group with only two modes.

While generally considered unfriendly to modifications, its simple yet ramshackle design offers flexibility for gunsmiths who know what they are doing, including using civilian 20-gauge 2.75-inch shells as a shotgun, or 45-70 government cartridges for hunting. It was adopted by the Minutemen for a short time, with heroic efforts replicating them on a large scale, intending to standardize their equipment at the height of their power before the castle fell.

Value:

Automatic rifle:

Damage: 36

Rate of fire: 56

Range: 91

Accuracy: 76

Weight: 17.7

Price: 191

Ammunition: .308 rounds

Ammo capacity: 10/20/30/50/80

Automatic shotgun:

Damage: 45

Rate of fire: 20

Range: 117

Accuracy: 45

Weight: 15.5

Price: 175

Ammunition: Shotgun shells

Ammo capacity: 4/8/12/20/32

Features:

A clumsy, slow-firing, modular automatic rifle!

Custom sounds (provided by Navarro)

Leveled-List integration.

Can be found at: (mostly @ LV22)

Automatic rifle:

Random, level 22

Merchant, level 22

Legendary loot pool at level 22

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