Just thinking about this one... At first it made sense, but then I realized that even though it launches a .22 calibre projectile, it is still center fire. Because of this I think it would be best to bring in the pistols first with 10rd mags that way the carbines can use the pistol mags rather than being limited to 5 rds as it would be if was a rifle/carbine mag.
Let me know your thoughts...