RetroArms CNC Hop-Up Chamber AR15 BASIC Cylinder Heads feature-rich stock designed for M4

feature-rich stock designed for M4 / AR15 airsoft platforms

this nozzle provides superior air seal and reliability

Features double internal O-rings for excellent air seal and consistency

Designed for Version 2 split gearbox setups

RetroArms CNC Hop-Up Chamber AR15 BASIC Cylinder Heads feature-rich stock designed for M4The RetroArms CNC Hop Up Chamber AR15 BASIC is a high precision upgrade for M4 AR15 AEG platforms, designed to provide consistent BB feeding, improved air seal, and enhanced hop up performance. CNC machined from high grade aluminum alloy, this chamber is built for strength and exact tolerances, ensuring optimal alignment with both inner barrel and gearbox. The BASIC version is ideal for standard builds, offering a reliable performance boost without