Maruzen M1100 Revision Semi-Auto Shell Ejecting Airsoft Gas Shotgun

"I wrote a very lengthy review but it didn't go through. So here's the short:
Everything on the inside is pot metal. Replace anything you can. The entire inside is PAINTED BLACK and the outside of the mech box was left rough metal, can you say mentally challenged engineers?! Parts that wear out immediately are the shell catches at the mag tube, the shell ejector, and everything else that's pot metal, so everything else. Disassembly is a no brainer, requires the removal of every screw but the four on the bottom of the trigger assembly. Those are just another stupid design for the second gas chamber. Replace the hose with an external air rig or just water hose from the plumbing section, because its brittle and kinky and bad. You need a good brass catch, otherwise this is not skirmish able. Otherwise it performs well as a room clearing gun or as a backup for a sniper if you need to quickly demolish someone in a short time to get to an objective. I used it in both those situations successfully with a makeshift brass catch. It's built like an AK, I found a ton of gunk in mine after an outdoor game but it was functioning perfectly. Hopup is quite literally a joke, they made a spot PERFECT for an adjustment screw, it had a hole and everything right above the rubber disc that acts as hopup. But they just didn't thread it and toss a screw in. It was a breeze to disassemble otherwise, I did it in one go with no lost or flying parts. The construction is just retarded in some areas, I'm a 17 year old amateur and I can tell you that that is NOT how you should have constructed that mech box. It pissed me off so much that I am going to fix my drill press and try to mill a whole new one myself. I found a gold plated and polished shell lifter on shape ways. The only thing this gun has going for it is the second kind of cool factor (aka it just turns you on) and the fact that it surprisingly runs well until it breaks. I am planning some SERIOUS modifications.