The SureFire Protective Rear Cap Assembly (NSN 5930-01-605-9781, Z68) is designed to enhance the durability and functionality of your SureFire flashlight. This robust assembly provides a secure fit, protecting the internal components from dust, moisture, and impact. Its lightweight yet sturdy construction ensures that your flashlight remains operational in the most demanding environments. Easy to install, this rear cap is an essential accessory for anyone who relies on their flashlight for tactical or everyday use. Upgrade your gear with this reliable protective cap and ensure your flashlight stands the test of time!