CMMG AR-15 Ejection Port Cover Hinge Pin | Model 55BA561 | UPC 810046231364

The CMMG AR-15 Ejection Port Cover Hinge Pin is a critical component for your AR-15 rifle's operation and function. Designed to secure the ejection port cover in place, this hinge pin ensures the smooth operation of the rifle’s ejection system by allowing the port cover to pivot open and closed. Made from high-quality materials for maximum durability and precision, the 55BA561 hinge pin offers long-lasting performance in even the most demanding shooting conditions, ensuring your AR-15 continues to perform at its best.

Why Choose the CMMG AR-15 Ejection Port Cover Hinge Pin?

• Precision Engineering — The CMMG 55BA561 Ejection Port Cover Hinge Pin is crafted to exact specifications to ensure a perfect fit in your AR-15 rifle’s bolt carrier group (BCG). This guarantees smooth function and a secure ejection port cover.

• Durable Construction — Made from high-strength steel, this hinge pin is designed to withstand the wear and tear of high-pressure shooting environments while maintaining its integrity for long-term use.

• Easy Installation — Whether you’re replacing an old or damaged hinge pin or upgrading your AR-15, this part is designed for quick and easy installation, so you can spend less time working on your rifle and more time shooting.

• Reliable Function — The hinge pin allows for the ejection port cover to function correctly, ensuring that the ejection port is protected from debris, dirt, and moisture when not in use. This helps prevent malfunctions and ensures that your AR-15 stays in top condition.

• Compatible with Most AR-15 Platforms — This hinge pin is designed to fit a variety of AR-15 rifles, ensuring versatility for gun owners and armorers alike. Whether you’re building a custom rifle or simply maintaining your current setup, this hinge pin is a reliable solution.

Built for Function and Durability

The ejection port cover hinge pin is one of those small but essential parts of the AR-15 that ensures the rifle operates smoothly and securely. Made with high-strength steel, it holds up to the pressures of regular shooting sessions, even with frequent magazine changes or extended strings of fire. By properly securing the ejection port cover in place, this hinge pin helps keep your rifle's internal components free from debris and environmental contaminants that could cause a malfunction.

Ideal Use Cases for the CMMG AR-15 Ejection Port Cover Hinge Pin

• Rifle Maintenance: If your AR-15’s ejection port cover has become loose, damaged, or malfunctioning, this replacement hinge pin is the ideal solution. Regular maintenance and part replacement ensure your rifle remains in top-performing condition.

• AR-15 Custom Builds: Whether you're building a new rifle from scratch or upgrading an existing platform, this hinge pin ensures proper function and a secure ejection port cover for a seamless AR-15 assembly.

• Field Use and Tactical Operations: In tactical settings or range days, maintaining a properly functioning ejection port cover is essential for reliable operation. The CMMG hinge pin ensures your AR-15 remains safe and ready for action.

Performance Benefits

• Smooth Operation: The hinge pin ensures that the ejection port cover opens and closes without hindrance, offering reliable protection against environmental elements.

• Preventative Maintenance: Replacing a worn-out or damaged ejection port cover hinge pin helps prevent malfunctions and ensures your AR-15 operates at peak efficiency.

• Long-Term Durability: Made from high-strength steel, the hinge pin is engineered for heavy use and is resistant to wear and corrosion, making it a long-lasting addition to your rifle’s essential components.

Installation and Maintenance Tips

1. Inspect Regularly: The hinge pin should be checked during routine cleaning and maintenance to ensure it remains properly secured and free of damage.

2. Proper Installation: Ensure the hinge pin is installed correctly by following the AR-15 assembly guide or consulting a professional gunsmith if necessary.

3. Lubricate: Light lubrication of the hinge pin and surrounding components will ensure smooth operation and reduce friction over time.

4. Replace as Needed: If you notice any loose movement or difficulty in opening or closing the ejection port cover, it's time to replace the hinge pin to prevent further wear on your rifle’s internals.

Specifications (At a Glance)

• Model / SKU: 55BA561

• UPC: 810046231364

• Material: High-strength steel

• Compatibility: Fits most AR-15 rifles

• Purpose: Secures the ejection port cover for smooth, reliable function

• Easy Installation: Quick, no-tool replacement for AR-15 users

• Durability: Built to withstand the rigors of high-volume shooting and tactical environments

SEO-Friendly Highlights (Quick Scan)

• CMMG AR-15 Ejection Port Cover Hinge Pin

• High-strength steel for durable and long-lasting use

• Fits most AR-15 platforms for easy installation

• Ensures smooth operation of the ejection port cover

• Model 55BA561 | UPC 810046231364

The Bottom Line

The CMMG AR-15 Ejection Port Cover Hinge Pin (55BA561) is a must-have component for maintaining the reliable operation of your AR-15 rifle. Crafted from high-strength steel, this pin secures the ejection port cover for smooth cycling and optimal protection against dirt and debris. Whether you're replacing a worn part, assembling a custom AR-15, or performing regular rifle maintenance, this hinge pin provides the perfect solution for maintaining the longevity and functionality of your rifle.

The End