Orga is a small Japanese company, obsessed with quality, innovation and performance. It’s run by a very nice chap called Teru, who’s command of English is better than mine.
The barrels are made in Japan to the highest standards. Tackleberry is very impressed with the concentricity, processing and finish of Orga barrels.
In terms of the concept which underpins the Orga barrel’s performance, I always remember the following nugget of wisdom, posted way back in 2010 (referenced from the Systema PTW Forum).
I think these diagrams say it all:
The AEG version of the Magnus HD actually features more design refinements than the PTW version, by virtue of the Marui hop system common to AEGs. I’ve heard good things about Orga barrels in P* set-ups, but I’ve not read anything about their use in standard AEGs, so can’t comment on that.
You can read about the refinements in the standard AEG version here.
Orga Airsoft also has a Facebook page.