Not worth it. - NC Star TLZ Series Laser Boresighters for .223/7.62x39/.308/.3006 calibers

I bought this after reading the positive review. My scope was way off and the guy at gander mountain made it worst "by trying to sight it in for 10.00" Anywho, I was very excited when it came in. Put the battery in and notice it's always on if the battery are in. There's no on/off button. That's not a big of a problem. The problem is that the battery last 15 seconds before the laser faded away and stop working. Take the battery out and put it back on. Same thing. First thing in my head is that the batteries are bad. I went to pick up some good quality batteries. Same thing. By the time I put the boresighter in the barrel to the time i look in my scope, it's already dead. I contacted them and they asked me to send it back to them for a replacement. Too much of a hassle and I didn't want to wait over a week to get it back. Not really worth it. My laser pen last for at least a year on the same type of battery, yet this lasted around 15 seconds.
Pros: it's a laser that fit my barrel
Cons: Battery life, On all the time.

This review was written in the old system and had content requirements that are different than reviews written today.