Koishikawa/Navy Arms 'Siamese' Mauser Type 45

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Weapon, Class 1
Koishikawa/Navy Arms 'Siamese' Mauser Type 45
Koishikawa Arsenal Siamese Mauser Type 45.jpg
Game information
Category Conventional rifle
Fire modes Bolt-action
Caliber .45-70 Government
Barrel length (inches) 24
Feeding system Internal magazine
+1 round in chamber? No
Critical failure type Failure to fire
Stock type Fixed (S)
Weight (units) 22
Max condition 15500
Shop value / Rarity Parallar symbol.png1300 (Rarity 3)
Accessory compatibility
Feeding Internal magazine
Standard: 5-round capacity
Muzzle N/A
Standard: None
Optics N/A
Standard: None
Underbarrel mount N/A
Standard: None
Lights N/A
Standard: None
Real world information
Manufacturer Koishikawa Arsenal
Navy Arms
Country of origin Japan.png Japanese Empire
United States.png United States
Year 1973
"One day, an engineer asked himself a question: "Can we make a Mauser fire .45-70 Government?" This peculiar Mauser rifle, originally designed to fire the obsolete 8x50mm R caliber, was rechambered to do exactly that, and it works wonderfully."
Hebizuka (quote written by Tempest)

The Koishikawa/Navy Arms 'Siamese' Mauser Type 45 (also called Siamese Mauser, Mauser Type 45, Type 45 or just Mauser) is a .45-70 Government conventional rifle.

Other information


  • This is a conversion of a Japanese-made firearm, the so-called "Siamese Mauser" Type 45, chambered in 8x50mm R. The original rifle was made in 1903 by Koishikawa Arsenal, but the year is listed as 1973, as this was the first year the American company Navy Arms started offering conversions of these rifles to .45-70 Government. As such, the rifle is considered to be both Japanese and American and both companies (and respective countries) are included in this weapon's information.