hi all, looking for some help. I have Whitworth MARK X in .300. the second shell in the feeder always flips up and jams. had it to Back Country in FSJ and they indicated that the spring and feeder are worn out. the rifle is in good shape so I am wondering if anyone has ever installed an external box mag? is there parts available?
I am in Edmonton now. any decent smiths around that know if this can be done?
I am in Edmonton now. any decent smiths around that know if this can be done?




















































