Shield Arms Shield Z9 Starter Kit for Glock Model 43 9rd Black B8ED3B82 QS. It is required to swap out your plastic OEM mag catch with either our standard steel mag catch or our premium steel mag catch. If you don't swap your mag catch you may have reliability issues. If you use another manufacturer's mag catch you may have reliability issues. Z9 magazines were designed to work with Shield Arms steel mag catches. If you have a first generation aluminum mag catch it is required to upgrade to one of our steel mag catch offerings. Kit Includes: (1) Z9 magazine with Powercron finish (1) Glock 43 steel mag catch black nitride. Specifications for Shield Arms Shield Z9 Starter Kit for Glock Model 43 9rd Black B8ED3B82: Manufacturer: Shield Arms Caliber: 9mm Luger Magazine Capacity: 9 Round Number of Rounds: 9 Features of Shield Arms Shield Z9 Starter Kit for Glock Model 43 9rd Black: Z9 Magazine in Powercron Standard Steel Mag Catch Optimized 9 rounds Bare essentials Glock 43 Package Contents: Shield Arms Shield Z9 Starter Kit for Glock Model 43 9rd Black 1 Z9 Magazine in Powercron and 1 Standard Steel Mag Catch - the bare essentials to switch to an optimized 9 rounds in the Glock 43. QSZ9STARTERKIT