NexxSpeed CNC Aluminum Hopup Chamber - Action Army AAP-01/C Color:Red a marking matrix which is

a marking matrix which is implemented at the bottom of the baseplate for magazine identification use

6v 1600 Nun-chuck Battery and smart charger not included

making the rifle highly customizable for different playstyles

More info on compatibility

NexxSpeed CNC Aluminum Hopup Chamber - Action Army AAP-01/C Color:Red a marking matrix which isThe CNC Aluminum Hopup Chamber is machined with precise CNC tolerances from monolithic Aluminum for improvements in stability, durability and overall performance. Specially FPS be increased about 5 15 more. It is unique designed with upper adjustment knob, making it easy to adjust without removing the Upper, no need drilling detents and pin.