two MOA only : This dot is kind of small which makes it exact. The draw back is it could be hard to “pick up” on drawing the weapon. If you're knowledgeable taking pictures pink dot sights on pistols then this is probably not a concern in your case. https://fn510accessories49652.slypage.com/34532131/how-fn510-accessories-can-save-you-time-stress-and-money