Highly advanced CNC-machined Hop Up chamber created to fit most popular AEG in Tokyo Marui standard (incl. G&G, KRYTAC except KWA).
Such a solution is dedicated to the most demanding players who are searching for the best quality and performance.

The M4A unit is designed to accept nozzles from 21 to 21.25mm to maintain the best air sealing possible. Chamber features are unique and will help to outperform other designs:
Compatibility with standard and R-Hop buckings
Removable Pivot Pin for maintenance purposes
BB latching system allows its user to release BBs from a unit
Inlet adaptor to ensure nozzle position and superb air seal
Delrin Locking C-Clip, which is positioning the barrel perfectly aligned
Soft and Hard nub in the set
Changeable side wings to improve position in the replica's body
Specification:
Overall Length: 51.65mm
Overall Height: 37.75mm
Inlet Adaptor Outer Diameter (to fit into Gear Box): 11mm
Hub Outer Diameter (to fit into Outer Barrel): 12mm
Hub Inner Diameter (to fit Nozzle): 8mm
Feeder Outer Diameter (to fit magazine): 8.85mm
Feeder Length (to fit magazine): 6mm