Thread: Unique X51 BIS magazine wanted

I have their Audax bolt gun. They also made the flasher Dioptra. I would assume both their bolt guns take the same mags. Mmmm, maybe better to not assume.
At any rate I have 2 mags. The flush fitting one and a real long one that the seller told me may have come out of a Unique 22 pistol. It fits and functions perfectly.
The short mag measures 11.23mm wide across the lips and 11.34 wide down the body. The long mag is 11.34mm wide across the lips and 11.36mm wide down the body.
There is sideways slop when either mag is in. The bottom metal gap is 11.43mm.