Just theorycrafting here... just a sketch to note down what we have to deal with...   1. Vibration damping: We know the case will resonate and vibrate from any sound from inside (air expansion) and from the barrel (piston impulse) so the case need to be treated to become a composite material so any vibration is deadened rather than resonate, can be achieved with a lining of vibration damping tape or with similar principle   2. Air gap: To limit energy transfer from inside to the case, maybe we can leave an air gap so all the air expansion is contained and processed inside, rather than transferred outside to the case   3. Absorbent material: We need to convert as much sound into kinetic energy as possible at this layer, maybe a heavy and absorbent material, maybe some sort of rubber or silicone or something along those lines   4. Air expansion chamber to match the cylinder volume ~1:1 so the space can be filled with as much absorbent material as possible (for the highest conversion ratio possible), geometry to match the air expansion pattern, and/or optimised for absorption (depending on how the absorbent layer is made). This area probably needs to be towards the back.   5. The "exit tunnel" of the BB should be towards the front so any leftover sound from the air expansion zone can be limited, we just want the BB going out but with minimal air pressure i.e. sound.   TLDR we need to convert the vibrations into heat as much as possible, and we try to do this inside while limiting any transfer to the outside

Yup.  I'll be there to be shot at by the sneaky VC all day.  The Firebase has had a lot of work done to it since the last 'Nam game, so I'm looking forward to testing out the upgraded fortifications.   @Skullchewer - I'm really glad you enjoyed the game on Saturday.  I was there as well on the blue team and had a cracking game.  Top marks to the lads on the green team that held the mortar pits all morning.  They made our lives so difficult, it was ridiculous - even more so as there were only a few of them hanging on to the timer.  We seemed to get our act together by the afternoon and managed to turn it around, but regardless of the result everyone seemed to have lots of fun, which is what makes these events memorable.   It's worth saying as well that if you like the filmsim genre Gunman hosts all sorts of games at filmsim.co.uk, including Nam and Cold War, although I have to say the highlight for me this year was the "Outer Rim" game a few weeks ago on May 4th (it's really Star Wars but don't tell Disney 🤫).  The effort everyone made by everyone was extraordinary.  Courtesy of Chris Thomas Photography these are a couple of pictures from the event, including a Tusken Raider, a hirable Battle Droid and finally me as an Imperial Trooper.  I can't quite bring myself to post pictures of the New Republic Forces as it's all rebel propaganda 😄:    

No just mentally deficient 😂 99% of the time I would sling the rifle on my right shoulder barrel forwards to and from game zone to safe zone.    I do also wonder why majority of pictures are with it on the left side though