Take a look at the Frog Engineering HPA conversion kit for the VFC MP7A1, a project designed to save airsoft players from the fickle temperament of green gas. By installing a permanent gas tank in the magwell and routing a hose through the trigger guard, the gun gains the consistency of high-pressure air while keeping its satisfying kick.

Jodo tries the Frog Engineering Airsoft HPA Kit For the BCM Air MCMR gas blowback rifle... "Join me as I put my newly converted BCM GBB to the test with its HPA system! In this video, you'll see the HPA enhances the performance and reliability of this airsoft beast. From precise shots to an increased rate of fire, the difference is astounding. Watch the full gameplay to see the BCM GBB HPA in action on the field, and find out if this upgrade is worth it for your airsoft setup."

Frog Engineering got an HPA-powered gas blowback pistol to show to you. The Army Armamanent R601 TTI is a realistic replica pistol made mostly of metal with a green gas blowback system that simulates firing for a lifelike experience. This Army Armament airsoft gun features improved grip texture, sights, safety levers, and a Picatinny rail for customization, all while offering good performance with an adjustable hop-up and a magazine capacity of 28 rounds.

Frog Engineering shows the results of their L119A2 built using the HAO L119A2 Kit with the Tokyo Marui MWS GBB as the base gun. The HAO L119A2 Monolithic (IUR) full kit for Marui MWS is a true monolithic upper receiver with a handguard, crafted from tough and slim 7075-T6 alloy. This kit also includes a very accurate L119A2 type lower, designed with meticulous attention to detail to satisfy true SAS enthusiasts.

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!"