Enhance the capacity and performance of your Glock 17 or Glock 22 with this +5/4 magazine extension in sleek black. Designed for both reliability and efficiency this extension offers an additional 5 rounds for 9mm magazines and 4 rounds for .40 caliber magazines providing a significant advantage in both competitive shooting and self-defense scenarios. Crafted from durable materials it ensures a secure fit and seamless integration with your existing magazine. The extension is lightweight and easy to install making it an essential upgrade for those seeking improved firepower without compromising on weight or balance. Ideal for shooters looking to maximize their magazine capacity while maintaining the trusted reliability of their Glock firearm.