bought this the other day just got batteries in it and holy crap this is the brightest torch i have ever owned and i had a maglite 2D LED and that turn pitch black rooms into daytime, spot on i have attached it to my Sig Sauer P226 and i did have to do a small bit of engineering of filing down the spring lock in bar for the rail systems, the main body is plastic and the actual torch head is alloy but its pretty sturdy, only problem all together is tiny bit of kit customisation to the spring lock bar and the batteries are quite hard to find on the high street unless you have a camera shop near by and are quite expensive but last a long time.
