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. The presenter notes that while the conversion requires taking apart a good chunk of the gun, it doesn't mess with the internal magic of the original nozzles or bolt carriers, meaning your aftermarket upgrades are still invited to the party.

The star of the show is the 3D-printed magazine, which is significantly lighter than the original metal version—perfect for anyone who prefers their gear not to double as a gym weight. These plastic mags hold 40 rounds, feature inspection holes so you can actually see your remaining ammo, and maintain the crucial bolt-catch functionality. There is even a prototype for a 60-round extended magazine, though the creator jokingly mentions these are often requested but rarely bought, perhaps because carrying a plastic "sword" in your magwell is a bold fashion choice.

During the firing demo, the MP7 shows off a crisp action and a rate of fire around 16 rounds per second. The presenter offers a bit of fatherly advice on safety, reminding viewers to cock the hammer before plugging in the air line unless they want a surprise "desk pop." With the ability to print your own magazines and a speed loader that handles 20 rounds per crank, this kit aims to keep you shooting long after your gas-using friends have frozen their valves in the cold.