The Field Package adds a 9.6V butterfly battery, wall charger, and extra 300 rnd high capacity magazine (for a total of 2).
The King Arms Nylon M4A1 RIS replicates the famous rifle used by US military and Special Forces. It compact size and railed allows the configuration of the gun with multiple accessories such as lights, lasers, scopes, handles, and grenade launchers. King Arms utilizes nylon fiber for its plastic components, which is far stronger and more durable than those airsoft guns that use ABS plastic. The King Arms RIS offers a well priced, full feature airsoft gun that is easily customisable.
Nylon fiber body for superior strength and durability over ABS plastic
One piece adjustable hopup unit
Metal outer barrel, front sight post, trigger, buffer tube and charging handle
Metal gearbox with 7mm bushings and steel gearset
Nylon fiber railed handguard system
PEQ style battery box holds a 9.6V battery
6 position LE style stock
Detachable adjustable rear sight
Metal sling loops
Velocity 370-390 fps (0.20g BB)
Average rate of fire 750 rpm with 9.6V battery
Draws 16.5 amps on full auto