Red dot sights come in two main forms: open emitter with the glass out in the open, and closed emitter where it’s a sealed unit. Before deciding, you must ask yourself several questions, including:
- Do you need rugged durability?
- Do you want the widest field of view possible?
- Does physical size of the optic matter for the firearm you’re putting it on?
If you’re looking for a rugged sight that can handle bumps and drops in the field or at the range while on a budget, an enclosed reflex sight is probably your best option. If you want the widest field of view possible, you should check out our line of open reflex sights.
The answer to this question really depends on what firearm you’re putting it on and what the purpose is. For an AR-15 or MSR, you’ll probably zero around 100 yards. For a turkey shotgun, you’ll probably be around 50 yards. For a competition pistol for USPSA or Steel Challenge you’ll probably be around 15-25 yards.