This is the new Side-Shot design plastic magazine for the FX Maverick, FX Crown, FX Dreamline and new FX Wildcat MKIII. This style of magazine is very easy to load with the entire plastic face-plate lifting off. Shot count for each caliber is below:
.177 - 21 rounds
.22 - 18 rounds
.25 - 16 rounds
.30 - 13 rounds
