We just started selling them about a month ago. I was initially pretty leery based on the previous SIG red dots but the quality of the new ones seems top notch and the price point is great. Designed in Oregon (cool!) but made in China, which is to be expected given the price. Advertised 40,000 hour battery life with an auto shut off feature, motion activated, works great so far and no complaints from the folks I've sold them to. Not sure how much I trust the claw mount, originally wanted to stick with irons but with the arm brace on the gun I have to crank my head down at a damn near 90 degree angle to see through the sights. Will update with overall function after I get my John McClane on this Sunday.