Great budget red dot - SIG SAUER Romeo MSR 1x20 mm 2 MOA Dot Reflex Red Dot Sight

For the money you can do a lot worse. I have seen cheap knock offs from overseas that are the same price but absolute junk, not even suitable for airsoft. This is a quality basic red dot that you can put on any gun you want usable optics on without breaking the bank. Does it have all the feature of the more expensive ones? No. However the money you save will feel much better in your wallet than on top of a gun you may or may not need those features on. If you have 500 bucks buy a $500 red dot, if you don't, buy this and know that you will be getting a good usable optic.