Now, here's a very helpful article on using optics on your airsoft guns. Flashlight Heaven, a retailer in tactical lighting, red dot sights, scopes, other aiming devices, and more accessories for your airsoft needs, does us service with this... "So, you’re in the market for a new Airsoft sight?  Not sure what type to go for?  Then read on...

You probably know that there are two main types; Red-Dot Sights (RDS), or magnified sights.  A sight is simply anything that helps you aim, whereas a scope (short for telescope) is a magnified form of sight.  So which is better?  The truth is, there is no single solution that is better in all circumstances; it depends entirely upon your style of play and personal preference, as well as the situation you’re faced with."

It's a great read, so better click here to read the rest of the article.