Rocket Airsoft Pro-1 M4 Metal Hopup Chamber Valken AEGs and work in any gun

and work in any gun Version 2 or Version 3 compatible parts

and range compared to stock gun barrels

and operate in 2 modes: Enhanced mode and Simple mode

Please note

perfect for CQB or other urban environments

Rocket Airsoft Pro-1 M4 Metal Hopup Chamber Valken AEGs and work in any gunThe Rocket Airsoft Pro 1 M4 Metal Hopup Chamber is an advanced design similar to the Prowin, but with a different cut and some extra parts included. Clean and aluminum make will fit in all M4 AEG airsoft guns' gearboxes. Includes SHS rubber bucking, but we recommend another bucking, such as a Maple Leaf, sold separately. Great for HPA gun installs! Packaging is Rocket Airsoft (OEM SHS).