|Like other reviewers have said, there is no off switch for this product. You have to take the batteries out, flip them around, and screw the battery cover back in to turn it off. Other than that, it comes with a nice little case to hole multiple boresights and other small tools, I will soon be adding a boresight for my .38 Special Ruger LCR with Crimson Trace Grips to line up my handle laser. I used this product in my S&W M&P-15 PSX model, worked flawlessly. I would have saved about $45 in ammo if I had this to start off with.
NEW GUN AR-15 OWNERS: IF YOU PLAN ON USING A SCOPE, BUY THIS BORESIGHT; IT WILL SAVE YOU TIME AND MONEY BY NOT HAVING TO WASTE ROUNDS BY NOT EVEN HITTING THE PAPER LIKE I DID. I SHOT 200 ROUNDS DOWNRANGE, MISSED THE PAPER EVERY TIME AND THEN GOT FRUSTURATED AND BOUGHT THIS. FOUND OUT I WAS SHOOTING 3 FEET ABOVE THE TARGET. AFTER I DISCOVERED THAT, IT WAS A 30 SECOND FIX AND I HAD 2" GROUPING AFTER 20 MINUTES. THIS PRODUCT SHOULD BE IN EVERY NEW SHOOTERS GEAR BAG. ALONG WITH A ROUND EXTRACTOR...BUT THAT'S FOR ANOTHER REVIEW.|