This article is a stub. You can help Gun Wiki by expanding it. The EX-17 Heligun is a two barrel 7.62x51mm NATO calibre machine gun. The weapon is gas operated and was developed by Hughes Aircraft for use in the OH-6 recon helicopter. Gallery[edit | edit source] Add a photo to this gallery References[edit | edit source] Retrieved from "https://guns.fandom.com/wiki/EX-17_Heligun?oldid=74520" Categories: Article stubs Aircraft weapons Multiple barrel firearms Prototypes Add category Cancel Save Community content is available under CC-BY-SA unless otherwise noted.