Muzzle Cover ID

[TGewehr]

Any idea as to what rifle this cover/cap is for?

Spring loaded. No markings visible.

Length is 55mm. OD of cap is 19mm

 

[Yellowstone]

Yugo mauser cleaning rod guide. Issued in the cleaning kits for the post war refurbished and new mausers . Hope this is helpful.

 

[TGewehr]

Thanks Yellowstone. I think you've nailed it! Just found this. https://www.ebay.com/itm/M48-Mauser-Muzzle-Protector-Cleaning-Rod-Guide-/131491532596