Full auto without the need for batteries. This Airsoft M4 runs on either 12g co2 capsules compressed air from a high pressure bottle. The choice is yours. All this from the awesome inline bolt system, adjustable rate of fire and velocity without the need to touch a spring all in an authentic M4/AR style rifle.

The Tippmann M4 features a realistic flip top break down, just like the real thing. This flip top break down gives access to the hex key adjustment for the rate of fire and velocity. In essence you can tweak the velocity to the maximum allowed without the need to take apart a gearbox.

If you want to run on 12g Co2 capsule, they are placed into the 80 round magazine which is included in the box. Want to shoot with a high cap mag, then run the Tippmann M4 on a remote line attached to a bottle and fill your boots.

The full metal receiver is compatible with most real M4/AR accessories including the rear stock, front shroud and picatinny rail system.