Things I liked:The all metal construction seems to be good quality. I was easy to install batteries, The batteries that came with the product were poor quality and almost dead. Things I would have changed:The batteries should have been better quality. The activation lever for the internal would not work with my IWI Tavor-21. They might work with an M-4. There is a cutout in the Tavor's MAG Well that seems to cause the issue, I even tried to shim the lever with some cardboard. What others should know:This magazine also mis-feeds in the Tavor. Usually the Mag dumps about 5 bb's evertime I insert it. Then it feeds the bb's until you are near the end of the mag. This seems to be an issue using these mags in My Tavor, Most other m-4 mags work well, My Tavor seems to like elite force Mid Caps the work perfectly in it.