Brand new all-metal semi automatic FN HERSTAL M4A Co2 BB air rifle by CYBERGUN comes with R.I.S. quad tactical Picatinny rail sytem and polymer flip-ups. Carry handle is optional. The fully detachable magazine comprises both an 18 BBs feeding tube and a Co2 bulb. This M4 is the REAL dimentions of 5.56mm M4 and can take a real M9 bayonet and real M4 magazine with INERT ammo, effectively turning this rifle into a de-activated replica, which can be used for training. It has all the correct markings of a real firearm including a 3-position fire selector, 5.56mm calibre and serial number. The Co2 M4A1 imitates the high quality alluminium-made upper and lower receivers of a real weapon, with a steel gas tube and all moving parts including a charging handle, forward assist button and removable carry handle. What's more, we increase the power of the magazine by about 15% - 20% by re-machining its main air valve to allow more air preasure into the barrel as an option. A spare magazine with increased energy of appx 4 Joules (450 fps) is also available

The FN M4A R.I.S. package includes FN Herstal rifle with power upgrade magazine (£229) + CHIMERA M203 polymer under barrel grenade launcher (S&T M203 with rebuilt trigger to fire TAG grenades), which is sold as an accessory for both airsoft and air guns, hence is subject to age restriction of 18 or over. Pls note, the original factory firing pin is not pushing far enough to initiate the launch. Our price includes M203 (£84) + TAG Shell Evo Pro Co2 cartridge (£120) or TAGInn KC spring-loaded launching device (£168). Pls visit Ammo & Air page for a selection of suitable grenades and extra cartridges