Maxx MI CNC Aluminum Hop-Up Chamber - SPORT

63.99 inc. VAT

Availability: 2 in stock




Internal type


A highest-quality Hop-Up chamber intended for tuning of M4 / M16 ICS replicas. Rotary chambers by Maxx Model Products are dedicated for the most demanding of players and offer an unparalleled thus far on the market quality of finish as well as perfect operation of the HU system in a replica.


– precisely-made form a block of aerospace aluminum using CNC technology
– ensured compatibility and tightness with M4 / M16 carbine replicas in ICS standard (CXP / CS4 / EBB as well as older models)
– rotary adjustment knob
– designed from scratch levers and concave nubs that provide issue-free operation with standard buckings and R-hop
– removable brass Slot Pin for configuring and maintenance
– compatible with 21 mm and 21.25 mm long nozzles
– full compatibility with majority of soft and hard HU buckings available on the market maintaining zero FPS drops and without any BBs falling out
– features a special CNC Delrin Locking C-Clip, that prevents vibrations and movement of the barrel
– equipped with 3 compression springs on top, at the bottom and in the middle of the chamber providing ideal and steady position in the replica
– compatible with every V2 gearbox 11 mm / 11.5 mm bore
– openable window that allows for simple taking out the BB from inside the chamber
– possibility of attaching a BB-illuminating module (not included in the set)
– possibility of attaching a sensor that stops the motor / HPA engine once the magazine has been emptied (not included in the set)

ATTENTION: SPORT version does not feature the “BB Latching” system that prevents BBs from falling out after removing the magazine from the replica.


Length: 51 mm
Height: 38.5 mm
Hub Outer Diameter (for the gearbox): min 11.5 mm – max 12 mm
Hub Outer Diameter (for the external barrel): min 12 mm
Hub Inner Diameter (for the nozzle): min 11 mm – max 8.3 mm
Feeder Outer Diameter (for the magazine): min 11 mm – max 9.25 mm
Feeder Length (for the magazine): max 6.25 mm
Material: Aluminum 6061

The set includes:

1 x chamber
2 x transparent, vinyl cover
1 x aluminum CNC Standard-Hop arm
1 x aluminum CNC R-Hop arm
1 x silicon Standard-Hop Nub Damper
1 x silicon Rubber R-Hop Nub Damper
1 x aluminum, precise CNC Hop Concave Nub 4.5 mm
1 x aluminum, precise CNC R-Hop Concave Nub 6 mm
1 x brass, rifled CNC Slot Pin
1 x CNC Delrin Locking C-Clip
1 x brass CNC Barrel Spacer
1 x brass O-ring Spacer Holder
3 x steel compression spring

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