I wanted to test the clone Eotech, so I ordered the 552 Eotech clone from RRAGES. From the time I held it, it seems solid, build well, worked fine at home, easy to zero, held up fine at home. Within one week, went to the range to test, the batt was dead. It worked for around 150 rounds, then the green LED stopped working. The red still works, but the batt. dies in 3 to 4 hours. You have to remove them or they just drain in the unit. So I just kissed off $99 + shipping for a good test.. Buy quality and stop wasting on test...That is the word for today.. I got one that looks good in the shower, rather than one that works in bed!