The MantisX is a rail-mounted accessory that helps shooters master trigger control, grip, and other aspects of accurate shooting. By using gyroscopes to collect motion data immediately before and after the shot (also for dry firing) and relaying that data to an iOS or Android app, MantisX recognizes mistakes, provides feedback, tracks history, scores performances, and improves shooting. Or, at least, that's their claim! I can say that it certainly works to recognize gun movement right before the trigger breaks and it offers meaningful, typically very accurate suggestions as to why you failed to hold the gun perfectly steady. <br /><br />Full TTAG written review here: www.thetruthaboutguns.com/2016/06/jeremy-s/gear-review-mantisx-firearms-training-system/ <br /><a href="http://mantisx.com/" target="_blank" rel="nofollow">http://mantisx.com/</a> Support the channel, get free stuff, join live streams, gain early access, and more! <a href="https://www.patreon.com/JeremyGunsGear" target="_blank" rel="nofollow">https://www.patreon.com/JeremyGunsGear</a><br />...<br /><a href="https://www.youtube.com/watch?v=GD581peV75I" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=GD581peV75I</a>