Aim-O 551 Red Dot Black

The Aim-O 551 Red Dot Black is a very nice S.W.A.T.-style Circle Dot that features a metal housing making it very robust.

The brightness of the Circle Dot (dot with a circle around it) can be adjusted using the arrow keys. You can also choose to play with a red or green Circle Dot with this Holosight type red dot.

The sight works on 4x LR44 batteries which are not included with this sight.