Madbull Airsoft have a scope riser kit to mount your RAS to your M4 body securely:
The RAS rail system on the real firearms is fixed on by the gas tube. Hoever, Airsoft AEGs don’t have gas tubes to connect both RAS and upper receiver.
Madbull / MAX Tactical’s RASFIX line of products mount onto both the upper receiver and RAS, thus making the RAS and upper receiver connect tightly. It can also be used as a scope riser mount.
Features:
– Quick aiming design when your optics fail–works like front and rear sights!
– Built using aircraft-grade aluminum CNC process
– Matte black anodized
– Bridges gap between upper receiver and RASMORE PHOTOS & INFO: www.madbull.com/rasfixediv