Maxx Model Hop-Up Chamber

This chamber is designed for most standard M4/M16 series AEGs, including ICS CXP, CS4, and EBB models. However, because airsoft tolerances vary by manufacturer, you may need to make minor adjustments to ensure a perfect fit with your specific receiver.

Yes, this unit is optimized for a nozzle length of 21.25 mm. Using a nozzle that deviates significantly from this length may compromise the air seal and affect your rifle's consistency.

Absolutely. The chamber is designed to be versatile and includes multiple nub options—soft round, soft flat, and hard concave—to accommodate R-hop, flat-hop, and standard hop configurations right out of the box.

The integrated BB latching system physically holds the BB in the chamber when you remove your magazine. This prevents the common issue of 'dry firing' or having loose BBs fall out of the hop-up unit during reloads.

While the installation is straightforward, it does require disassembling your rifle's upper receiver and barrel assembly. If you are comfortable working with small parts and have basic airsoft tech experience, it is a manageable upgrade.

The CNC-machined aluminum construction provides significantly better rigidity and durability than standard plastic chambers. This reduces flex during firing, which helps maintain a more consistent air seal and improves overall shot-to-shot accuracy.