AIM 4X32 IIIumination Tactical Compact Scope of the later styles of red reticule scopes in Airsoft due to the rail system on the actual scope itself and is a military styled scope with simplistic operation.
Windage and elevation adjustable scope reticule with 5 levels of brightness.
It drop right on to an accessory rail with a simple screw type rail attachment bracket.
Disclaimer: All aftermarket upgrade parts require necessary skill or modification to install and assemble, please consult with your airsoft technician if needed.