Check the batteries "" - LaserLyte Laser Sight Trainer

after installing it on my hi point cf380 and trying to get it to work took it on and off three times thinking i am doing something wrong comes with six new batteries so i figure that isnt the problem so i packed it back in the box to send it back ,then i figure ill give it one more try and start to look at the batteries and notice there green at the top and so i go buy some new batteries at hardware and put it back on and it worked ,i am happy it worked because i was going to send it back for a refund , PLEASE CHECK THE BATTERIES THEY SEND ""