The Vixen should be a fairly straight forward rebarrel.
It has a internal .223 mag with a max COAL of 58.5mm, so the same as my CZ 527 mags.
It has a custom carbon fiber Stug stock fitted so as long as that has been bedded properly and the bottom metal is fitted correctly in the position it was in the walnut stock it should feed fine.
The barrel inlet channel may need a little tickle up but other than that it should be great.
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