Airtac CRBN HPA upper Gen. 4 Color 155mm:Purple - 155mm Allows easier reloading of the

Allows easier reloading of the original 175rnd magazines for the VFC M249

The Airtac Customs USA CNC Aluminium endcap is specifically designed to fit G&G M4 lower receivers

Note: May require technical experience to install

Easy to store and bring on the field

it is easy to adjust the hopup through the window cuts on either side of the body

Airtac CRBN HPA upper Gen. 4 Color 155mm:Purple - 155mm Allows easier reloading of theIntroducing the Gen 4 HPA CRBN Uppers a new level of durability! Airtac CRBN HPA Upper for M4 AEG bodies. Turn your AEG into a HPA speedsoft monster build with this fancy upper from Airtac Customs USA. Designed and made by Airtac Customs in USA, this is a nice uppper that combines style with efficient ergonomics. Made from a carbon fiber tube with a custom designed and 3D printed chassis that includes fiber rod front and rear sights. And it goes