Assault rifle M4A1 RIS CQB Cyma (CM.506) is a copy of the M4 CQB assault rifle. It comes from a family of weapons that have been produced since 1957 starting with the AR-15 model, continuing with the M16. M4 is the shorter version of the M16 rifle.

The airsoft rifle M4A1 RIS CQB Cyma (CM.506) with adjustable stock is made of a combination of resistant materials: ABS and metal which makes the replica affordable. Moreover, it is equipped with a RIS rail on which various tactical accessories can be mounted. The external barrel is made of metal with 14mm CCW thread, and the flash hider is ABS (not secured with screw on the thread).

Components:
Metal: external barrel, gearbox, internal components.
ABS: body , handguard, sights, flash hider, magazine, transport handle.

Gearbox component:
- metal gearbox housing
- cylinder type 1
- directional piston head
- plastic piston
- 8 mm reinforced steel bearings
- spring M120
- steel gears

The package includes: rifle, magazine, charger, NiMh 1100 mAh 8.4 V battery, tactical sling, test bbs and cleaning rod.

NOTE! The rifle is not compatible with Castellan magazines.