MAXX CNC Hop-up Chamber M4G (ICS AEG → VSR) – Black

CNC hop-up chamber MAXX Model M4Gi for AEG ICS M4

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MAXX Model M4Gi is a hybrid upgrade chamber combining the advantages of AEG and GBB / VSR. It is designed for GBB / VSR buckings and matching GBB inner barrels, ensuring better air seal, higher accuracy and more stable trajectory, as these components are originally designed for sniper platforms where precision is essential. The chamber is specifically designed for ICS AEG rifles (SSS, CXP, CS4, EBB and older models), providing perfect compatibility and fit. Precise CNC machining ensures tight tolerances, while the rotary TDC adjustment ring allows fine tuning of hop-up pressure. Thanks to the replaceable pressure segment and optimized arm, the chamber delivers even pressure on the bucking. The design also features a BB latching system with lever that prevents BBs from falling out and allows quick manual release. Precise alignment is ensured by the inlet adapter and brass guiding wings, while the Delrin C-clip locks the inner barrel securely in place. As a useful upgrade, we also recommend the EPeS illumination module, which converts the side transparent covers into a tracer unit for TRACER BBs.

Key features of the MAXX Model M4Gi CNC hop-up chamber

Hybrid upgrade for ICS

Uses GBB / VSR buckings and barrels for improved accuracy and performance with heavy BBs in AEG ICS rifles.

Compatible with Maple Leaf buckings

Optimized for GBB buckings such as Maple Leaf Wonder, Super or MrHop for maximum performance.

TDC rotary adjustment

Precise tuning of TDC pressure for consistent BB trajectory.

Replaceable pressure segment

Adjustable contact surface depending on BB weight and usage.

BB latching system with lever

Prevents BBs from falling out and allows quick release by pressing the lever.

Precision CNC construction

Aluminum body ensures durability, precision and long service life.

Stable barrel alignment

Brass guides and Delrin C-clip hold the inner barrel firmly without movement.

MAXX Model M4Gi hop-up chamber

Hybrid hop-up chamber optimized for ICS AEG platforms with maximum accuracy and consistent performance.

Technical specifications

• Compatibility: ICS AEG M4 (SSS, CXP, CS4, EBB and older models)
• Bucking type: GBB / VSR
• Barrel type: GBB / VSR
• Material: Aluminum
• System: Rotary TDC hop-up
• Recommended buckings: Maple Leaf Wonder, Super, MrHop
• Length: 51,15 mm
• Height: 37,75 mm
• Weight: Approx. 20 g
• Inlet adapter outer diameter: 12 mm
• Nozzle inlet diameter: 8 mm

Package contents

• 1× CNC aluminum hop-up chamber M4Gi
• 2× CNC acrylic side cover
• 2× CNC brass 2,5 mm side wings
• 1× CNC steel pin
• 1× CNC aluminum hop-up arm
• 1× CNC aluminum soft round nub
• 1× CNC aluminum soft flat nub
• 1× CNC aluminum hard concave nub
• 3× Steel nub springs
• 1× CNC steel spring guide
• 1× Steel upper tension spring
• 1× Steel middle tension spring
• 1× CNC Delrin locking C-clip
• 1× CNC brass barrel spacer
• 1× Brass O-ring spacer holder
• 1× CNC aluminum rotary ring
• 1× CNC aluminum inlet adapter
• 1× Shim set
• 1× O-ring set

Warning

• Not compatible with standard AEG buckings.
• Requires GBB / VSR hop-up bucking and GBB / VSR inner barrel with proper cuts.
• Some GBB buckings may require DIY modification of the contact surface.
• Recommended for DMR builds with heavier BBs 0,30+ g.