Airtac CRBN HPA upper Gen. 4 Color 155mm:Purple - 155mm -Lower profile than TDC Shield

-Lower profile than TDC Shield MK1

New for the XMOD (as compared to the previus NEXXUS engine) is a nozzle speed adjustment

Ambidextrous design allows the user to push on either side to release the magazine

Low and Very Low

Airtac CRBN HPA upper Gen. 4 Color 155mm:Purple - 155mm -Lower profile than TDC ShieldIntroducing 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