MAXX Model HopUp Chamber

Compatibility depends on the specific variant you choose. The M4i is designed for ICS CXP/CS4/EBB series, the M4A fits standard Tokyo Marui, G&G, and KRYTAC platforms, and the M4P is specifically engineered for HPA PolarStar engines. Please verify your rifle's internal platform before selecting your variant.

The integrated bottom chamber acts as a retention system that prevents BBs from falling out of the hop-up unit when you remove your magazine. This eliminates the annoying 'dry fire' or double-feed issues often experienced during quick reloads.

Yes. Because it is machined from high-grade CNC aluminum rather than molded plastic, it provides a much more rigid structure. This rigidity helps maintain consistent hop-up pressure, which is critical for shot-to-shot accuracy.

It includes the hop-up unit itself along with several adjustment components designed to help you fine-tune your hop settings. While it covers the essentials for installation, ensure you have standard airsoft tools on hand for the disassembly of your rifle.

While a hop-up unit doesn't change your muzzle velocity, it improves consistency. By providing a more stable, precise platform for the hop-up bucking to engage the BB, you will likely see a tighter grouping and more predictable trajectory compared to a worn or loose stock unit.