Bio,
Thanks for the Orion Iguana Hunter mag wheel link, problem solved. About the .30 FX OEM magazine, all I can say is that my .30 MK3 Wildcat Sniper, despite having been mauled in a previous life, always held an air charge and never jammed during 273 cycles. I know the mags are different, just that the FX designers might have been more on target with the .30.
WM
P.S. As you know, my computer skills are minimal, think Orion's How-To wheel assembly video would be helpful out here on forum. It's located on wheel page, one of color choice pics.