The FAB Defense FX4310B Mag Extension 4rd Compatible w/ Glock 43 Black Matte Polymer is an essential upgrade for Glock 43 owners seeking to enhance their firearm's capacity and handling. This expertly crafted mag extension, designed by F.A.B. Defense, seamlessly replaces the magazine floor-plate, transforming your Glock 43 into a formidable 10-round powerhouse. Engineered with a special ergonomic design, this Glock 43 magazine 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 of the FAB Defense Glock 43 mag extension 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 offers both strength and 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 for Glock 43 is an ideal choice. With its UPC 7290105944771 and MPN FX4310B, the FAB Defense FX4310B offers a practical and stylish solution for those seeking a Glock 43 capacity increase and grip extension, ensuring your handgun is always ready for action.