Argentinian 1909 Rear Sight Spring produced by DWM. This part will work for most all standard Mauser 98 rifles. This is a used part in good condition. All used parts have been sorted to remove any damaged parts. However, they may have tarnish or worn finish, or exhibit wear. Not all Mauser parts are interchangeable, if you are not confident in changing these parts, please contact your local gunsmith!