One magazine per rifle seems to have been a Daystate policy for some time. I have a .25 Air Ranger, and two extra magazines cost $260. Those older .25 magazines are quite frustrating to use. The newer magazines, the ones with the door, look much better, but I would be tempted to look into CARM magazines,
CARM magazines work well in my FX Crown. They don't have the quality of design or manufacture as the FX mags, BUT halfway through the year end lago Slado FT match, I had my one and only FX magazine fall out of my Crown when I cycled the bolt. The little o ring that holds the magazine fell out and there was no tension to hold the magazine body in place. The CARM magazines worked fine.
Ron