The Mantis Blackbeard AR-15 Auto Resetting Trigger System is an excellent tool to keep you on target. The Mantis Blackbeard allows you to get a lot of dry-fire drills in, utilizing whatever trigger is in your gun. The Blackbeard resets your hammer for you, so you can keep focusing on trigger discipline. It even resets your trigger when running select fire. To use, simply swap your bolt carrier group and magazine for the Mantis bolt and magazine/battery. There's also a laser that will quickly appear as your shot breaks, showing you where you would hit. An excellent accessory to work on target transitions and perfecting marksmanship. Automatic trigger reset system For dry-fire training Can be paired with Mantis X for additional feedback Comes with bolt/laser and mag/battery