The FAB Defense FX4310B Mag Extension 4rd Compatible w/ Glock 43 Black Matte Polymer is an essential upgrade for Glock 43 owners looking to enhance their firearm's capacity and handling. This expertly crafted mag extension from F.A.B. Defense seamlessly replaces the magazine floor-plate, transforming your Glock 43 into a formidable 10-round powerhouse. With its ergonomic design, this extension not only increases capacity but also ensures a secure grip, allowing for confident manipulation and a full grip on the weapon during use. The innovative spring plate design allows for the continued use of the original magazine spring, ensuring reliability and ease of installation. Constructed from durable fiberglass reinforced polymer, this black matte polymer mag extension combines strength with a sleek aesthetic, making it a perfect match for your Glock 43. The contoured finger indents provide a firm grip during magazine changes, enhancing overall handling and performance. Whether you're looking to increase your Glock 43's capacity for self-defense or improve your grip for better control, this mag extension is an ideal choice, ensuring your handgun is always ready for action.