The FNX Magazine Base Pad Extension adds two and a half (2.5) rounds to the existing standard capacity magazine for the FNX 45 model pistols. Why is it 2.5 rounds, not 2 and not 3? Apex's mag extension leaves enough space for 2 additional rounds to be loaded, but also enough space for the stack to further compress the magazine spring to allow a fully loaded magazine to be seated with the slide in battery.

• Fits FNX 45 model pistols.
• +2 Rounds.
• Maintains function of the slide lock after the last round is fired.
• Finger grooves on the perimeter and front corner finger grooves make gripping the base easy.
• Machined from aluminum and Black Type III Hardcoat Anodized for durability.
• Single Set screw keeps mag extension snuggly in place and allows for ease of disassembly.
• Easy to install.