551 advanced red dot sight 21mm Vedlikehold - Lasts a lifetime with

- Lasts a lifetime with a lifetime guarantee

The cartridges contain CO2 gas and this can last anywhere between 40 to 400 shots

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It works optimally in temperatures between 15°C and 25°C

This magazine fits WE 17/18/19/23/34/35

551 advanced red dot sight 21mm Vedlikehold - Lasts a lifetime withThe 551 Advanced compact red dot sight from Strike Systems is well constructed of metal and hard plastic. It has a rear facing keypad, with on off and controls to change the color of the reticle, red or green, as well as adjust the brightness of the reticle. Fully adjustable for windage and elevation. The four AG13 LR44 batteries are stored in an easily accessible compartment that is securely locked by a lever and allows for quick and easy battery