Hello ! Here is a new project: a new upper heavily inspired by the BRN-180 for the Tokyo Marui MWS Airsoft replica. It uses the BRN-180 Sport design as a basis (easier to print and tougher bolt handle design, lack of dust cover), but with the full lower of the MWS, included the buffer tube (which is still needed by the way, sorry guys!) Having the charging handle on the side is a very refreshing view, and having the MWS components means it still has very good perfs! It uses all the mechanical components of the MWS, you can easily make a new upper for your MWS by buying a new hop unit, barrel, and eventually a new bolt if you want to do a fully swappable unit. The standard bolt is used, there is only a “bolt extension” that needs to be installed on it (uses the 2 original screws, the installation is done in 10s and requires absolutely no modifications on the bolt itself). The hardware needed in shown in one of the pictures. These are very common parts which canbe found extremely easily. I had to use short version of inserts though: they are sold by the brand “Ruthex”, and are designed with an “S” (like, M3S, M4S, M5S...). They may be sold by other brands too, but you can’t go wrong by using the same ones as me! All of the critical parts are separated from the rest (front loop, back loop, barrel...). In case one break, you can easily replace it! I didn’t has the occasion to test it in a game, i’ve only thrown some mags in my garden. So far no damage has been seen, but I can’t recommend enough to use lighter gaz as usual, and keeping in mind that it’s a 3D printed part, not a CNCed aluminium one! The hop Up is adjustable through a TDC screw. It pushes on the hop arm, making the adjustment possible without diassembling the replica, from the top of the rail. Just let it visible and carry an hex wrench in your bag! (After a feedback, it seems that in certain cases (mags, printer tolerances...), BBs feeding can be troublesome. You can use the part “mws_upper_brn180_front_v2.stl” instead of the normal one to help correcting the problem!) Installation guide here: https://youtu.be/UYbxz4wYqXE Shooting test here: https://youtu.be/mG4bqzSeTQc?feature=shared Have fun !