Had a TLR7 on my pistol. While it is s great light, the side activatation switch was just out of easy reach for my grip on pistol.
I replaced TLR-7 on pistol with new TLR-7A with rear activation switch.
I put first TLR-7 on top rail of AR just in front of Daniel Defence rock n lock front sight.
This positioned side activation switches perfectly, and 500 lumens plenty bright for AR. Also the TLR-7 is protected from most impacts by front sight.
This worked so well that I bought this TLR-7 for my other AR.
As to Red Diamond, they had best price at the time and fast shipping as promised.
I prefer merchants that deliver on there promises.