NcStar SPD Solar Combat Red Dot Reflex Optic H&K Airsoft Guns You can utilize the picatinny

You can utilize the picatinny to attach lasers or flash lights as well

Compatible with additional 9

The Acetech Predator MKIII Tracer Unit (Blaster-M Inside) is for use on airsoft guns that have a 14mm threaded (for use on 14mm CCW or 11mm CW w/included adapter) barrel

Version 2 gearbox

For use with or without a lower mesh protective mask

NcStar SPD Solar Combat Red Dot Reflex Optic H&K Airsoft Guns You can utilize the picatinnyThe SPD Solar Combat Red Dot Reflex Optic. Fits on standard top rails. Solar powered to recharge its battery or AAA battery replacement. The SPD Combat optic has dual power modes; it can run off the Sun via the solar cell on top of the optic, or the onboard AAA Battery (included). Optic includes the Patented SwitchCover lens covers. PATENTS: US 9563050, CA 2881921, CN 201510067251, EP 2908084, PATENT PENDING Five brightness settings for the red dot