I second what WingedMelon claimed. I have quite a few Holosun optics, like this a person, and have not had a difficulty with any of these. I am truly selling my Trijicon RMR to obtain another a person. The 507 is on par, if not improved, than my DPP.There exists an ambidextrous safety Situated into the rear of your trigger guard. Early A5s experien