German U-Boat Line-Thrower Rifle Conversions

Published on October 21, 2018
Duration: 8:09

This video explores rare German line-throwing rifles converted from Gewehr 98 actions, likely by Mauser for naval use on U-boats. These unique firearms feature extended stocks for recoil management when firing blank cartridges to launch lines. The presentation details specific design modifications, including reinforced front ends, wooden floorplates, and variations in barrel and bore dimensions between models.

Quick Summary

German U-boats used line-throwing rifles converted from Gewehr 98 actions to transfer lines between vessels for crew or supply exchange. These unique firearms featured extended stocks and reinforced fronts to manage recoil from blank cartridges, similar to rifle grenades.

Chapters

  1. 00:00Intro: U-Boat Line-Thrower Rifles
  2. 01:15Recoil Management Design
  3. 02:00Muzzle and Bore Variations
  4. 02:50Action and Markings
  5. 06:25Mechanical Operation

Frequently Asked Questions

What were German U-boat line-throwing rifles used for?

These rifles, converted from Gewehr 98 actions, were used on German U-boats to throw lines between vessels. This allowed for the exchange of crews or supplies when direct maneuvering was too dangerous or impossible.

How did these rifles manage recoil?

They featured an exaggerated length of pull and a heavily reinforced front end. This design helped manage the significant recoil generated by firing blank cartridges to launch heavy lines, similar to launching rifle grenades.

What were the key modifications on the U-boat line-thrower rifles?

Modifications included an extended stock for recoil management, a wooden floorplate replacing the magazine, and threaded muzzles for line spools. Bore and barrel lengths also varied between models.

Were these rifles factory-made or custom conversions?

The observed rifles, bearing matching Mauser Oberndorf 1914 markings and all-matching serial numbers, suggest they were likely converted in batches directly from the factory, rather than being field modifications.

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