Wanted to clarify since my box is marked 775 lumens, and did not come with the 1k lumen sticker. I did send the serial number over to Streamlight and they confirmed it is 1K. So if you're in doubt, email Streamlight, they'll get back to you shortly.The light itself is bright. I have the TLR1-s, TLR1-HL, and this one. The regular S is fine for indoors, but can lack if aiming further outside. The HL is def a good all-around weapon light, IMO. The lens is just less bulky than the HPL, and I think it throws just as good of a beam. I think the HPL IS a little more concentrated in the middle, while still providing good overall wide coverage, so it definitely has its merits, but the lens, being larger, just seems slightly less durable (I'm guessing) than the HL, which I think is a great light, smaller lens profile, etc. So on my my shorter AR, I have the HL -- slightly longer, I have the HPL. You won't regret it, just get it. I have them mounted to the 6 o'clock positions on the pic rail, can easily use my index finger to manipulate the toggle - I didn't want wires everywhere.