Swede:
Thanks for the prompt reply. Hopefully we will try our luck at combat this weekend. I finally did convince myself that the shaft was M5, and found an old spinner nut that was close to M5 and tapped it out to 5mm. Works great! Let's hope the weather cooperates and allows us to try our luck at combat. I have never done it before, but am looking forward to it.

Thanks,

Cajuncharley