AR9 Replacement Mag Catch | Polymer80
About this product
Upgrade Your AR9 Build with the Polymer80 AR9 Replacement Mag Catch
Enhance the reliability and performance of your AR-9 platform with the Polymer80 AR9 Replacement Mag Catch. This precision-engineered component is designed specifically for our AR9 80% lower receiver, ensuring seamless compatibility and optimal function. Crafted from high-quality billet aluminum, this mag catch offers exceptional durability and resistance to wear, making it an essential upgrade for any serious builder or shooter.
Key Features and Benefits
- Billet Aluminum Construction: Provides superior strength and longevity compared to standard parts, reducing the risk of failure during intense use.
- Complete Installation Kit: Includes a dowel pin and capture set screw for easy and secure installation, saving you time and effort in your build process.
- Enhanced Magazine Retention: Improves magazine lock-up and release, contributing to smoother and more reliable operation in your AR-9 firearm.

Technical Specifications and Compatibility
This replacement mag catch is engineered to meet the exact specifications of Polymer80’s AR9 lowers, ensuring a perfect fit and function. It is compatible with a wide range of AR-9 builds and is ideal for both new constructions and as a replacement for worn or damaged parts. As part of our commitment to quality, this component undergoes rigorous testing to uphold the Polymer80 standard of excellence in firearm components.
Why Choose Polymer80?
With years of expertise in the firearms industry, Polymer80 is a trusted name for 80% lowers and accessories. Our products are designed with the DIY enthusiast in mind, offering easy-to-install parts that enhance your shooting experience. This AR9 mag catch is no exception, providing a reliable solution that boosts the performance of your AR-9 platform. Whether you’re building from scratch or upgrading an existing firearm, this component is a must-have for ensuring safety and reliability.
Note: Always follow local laws and regulations when purchasing and installing firearm parts. This product is intended for legal use only.
What's in the box
- AR9 Replacement Mag Catch | Polymer80