two MOA only : This dot is quite small that makes it precise. The downside is usually that it could be difficult to “get” upon drawing the weapon. If you are knowledgeable taking pictures pink dot sights on pistols then this is probably not an issue in your case. https://knoxhcpgw.mysticwiki.com/1393778/the_single_best_strategy_to_use_for_fn510_accessories