The Sightmark .380 ACP Pistol Boresight is designed as the ideal zeroing tool, chambering directly in your firearm for more accurate sighting compared to muzzle-attached Boresights. Compact and lightweight, this in-chamber Boresight is crafted from durable brass, ensuring reliable chambering and ejection. Powered by 2x AG5 batteries with a 1 hr battery life, the laser enables precise zeroing from 15 to 100 yd. Sized exactly like a standard .380 ACP cartridge, it is convenient to store in a rifle or range bag. The package includes the Boresight, batteries and a carrying case, making it a practical and essential tool for any shooter.