Will a red dot sight replica made for airsoft use be able to retain zero when used on a real steel AR-15? Watch this video by Run Gun Peppers... "Will airsoft red dot work on real gun? We decided to test it. Took one no-name red dot from China, put it on VG4 Brutale AR 15 and did some shooting.

At the beginning we had some problems to mount it, cause mount was out of normal specs,. but peace of foil can solve it! Take a look how this cheap optic performed!"