Frog Engineering shows how you can convert the Tokyo Marui MWS GBBR to be HPA powered. The replacement parts are to be 3D Printed for those who are interested and they can be found on either Cults 3D and Printables.com.

Frog Engineering show the conversion they did and that they put out a manual to help you out... "Japanese frog also do GBBR!!! Now they can, on HPA! Next week, an assembly manual will be published in the usual manner, with replacement parts and guides for conversion assembly."

Frog Engineering gives a sneak peek of their HPA-powered airsoft LMG... "In Frog Engineering there were not much updates lately... what consumed all the time? Don't you think GBBR machine guns for airsoft became quite a topic? So check this custom prototype! Frog Engineering answering the trends! On HPA of course! Let me know if you like to learn more, more information shall come soon!"

Frog Engineering Airsoft does a quick overview of their custom VFC M27 IAR HPA GBBR. As this is made to order, interested parties will have to contact them on their Facebook page to enquire... "Yet another built to order Frog Custom ready to leave the workshop. FE/VFC M27 HPA GBBR, set to 1.9J on 0,36g BBs as a assault rifle for polish muzzle energy limits. Runs on Redline Mini SFR at 120 psi and FE custom Hi flow hose. Paintjob by Frog Engineering Custom division."

Frog Engineering Airsoft do some custom HPA conversion of airsoft guns and in this video, they did a conversion of the WE Airsoft 888 Gas Blowback Rifle, WE's version of the HK416D, to use HPA as power source... "Long awaited, HPA conversions for WE HK416/AR15 GBBRs are released! Be sure to check out the latest materials! If you want to get one send message for details!"