Automatic Electric Airsoft Gun M4 Flex, upgraded

Includes an additional 90 spring for power reduction when playing in buildings etc. Adjustable length stock, attachments for single point belt, adjustable BB trajectory, rails for mounting accessories on all 4 sides, v2 gearbox. Sights are foldable so they do not interfere with the use of a collimator sight.

Quick spring change - no need to remove the gearbox or even any tools, the spring is changed by removing the stock.

Easy spring change, powerful and strong internals, shoots fast even with a powerful spring. Suitable for left and right handed use. Battery and charger are not included. Includes branded magazine, folding sights. Fits standard M4 magazines. Can be fitted with silencer. Adjustable hop-up.

• Muzzle velocity: ~113 m/s
• Weight: 2,1 kg
• Length: 72-81 cm
• Magazine capacity: 300 pellets
• Included: the rifle, magazine, M90 spring, barrel cleaning rod.

This version includes the following improvements:

• 8 mm bearings
• steel gears
• polycarbonate piston with full steel strip
• type 2 cylinder, steel interrupter
• parts strong enough for M140 spring
• high precision 6,03 mm barrel