O-negative - Regulator Pressure Tester

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Red / O- negative - Self purging regulator pressure tester
Test your tanks output pressure before putting on your marker!  
Ensure your not overpressured and marker is optimized for softer pressure for marker regulation. Can create softer feel and more shots per fill
Follow manufacturer recommended pressures for all paintball marker manufacturers. 
*Pressures over 800 can damage the calibration 
Disclaimer - not liable for over pressured regulators or improper use of the testers. Ensure the pressure is gone cap backed off and purged before removing regulator. If improperly used can cause damage to bonnets / threads of regulators.** For testing paintball tank regulators only**
Compatible with:
Ninja paintball Regulator
Powerhouse paintball regular
Immortal air paintball Regulator
Project paintball regular
Twister paintball Regulator 
HK paintball Regulator 
*As well as many more and generic/Chinese regulators though many have been found at 800+ PSI which can start to damage the testers gauges higher thar goes*