Description
Magazine extension for the FX3 and FX4 12 Gauge Semi-Auto Shotguns.
Note: These magazine extensions are fully within specs and operational for all FX3 and FX4 shotguns, but due to slight variances between firearm models of different manufacturing dates and the inclusion of a plastic spacer in the fore grip, the extension may need a thin washer inserted into the tube to ensure there is no play in the action after installation. This may be the case for compatible third party made shotguns as well.