viktor2142

Good point about gradual reduce of the pop, so perhaps the whole thing should be filled with some sort of open cell foam that is high enough porosity for maximum diffusion
 
So perhaps there is some merit about the common paint roller insert
 
Butyl I guess is nice as a middle damping layer between materials, or a lining layer, but not sure if it is the best interface for the air borne noise, because maybe the smooth surface isn't as good as an open cell structure for diffusion of the pop
 
Maybe if you roll up some thin gauge wire mesh to simulate an open cell structure it would be very effective at diffusion and absorption?

Let's do some maths
 
Let's say we want to completely contain the pressure wave within the can so by the time the BB exits there is zero difference in air pressure inside and outside the can, meaning the ideal air volume in the can plus the volume of the barrel should roughly equal cylinder volume:
 
Vcan + Vbarrel = Vcylinder
 
The typical cylinder volume is what, ⌀ 24 mm x 50 mm? or ~22.62 cm3, if this is 3/4 ported it becomes ~17 cm3
 
If my barrel is a 270 mm barrel, ⌀ 6 mm x 270 mm is about 7.63 cm3 (so the ratio is about 2.23 it seems but this is irrelevant)
 
That gives me about say 9.4 cm3 of air that needs to be diffused inside the can
 
Assume we are using a replica of a 556 can with an external size of say ⌀ 38 mm x 157 mm, subtracting the body thickness and a layer of butyl tape lining of say 2 mm and fittings etc we have an internal volume of say ⌀ 32 mm x 110 mm or thereabout or 88.47 cm3 of total space inside
 
Of course we need to leave a clear corridor for the BB to go though and it cannot be so tight, if it is ⌀ 10 mm x 110 mm this is 8.64 cm3 out of the 88.47 cm3 that needs to be kept clear, giving us say 80 cm3 of diffusion zone available
 
But this BB clear corridor should also be included in the Vcan so this ⌀ 10 mm x 157 mm or 12.33 cm3 is already bigger than the 9.4 cm3 volume we need to normalise
 
That means, the foam fill material within the 80 cm3 diffusion zone is really just handling impulse pressures
 
And if we sketch out the wavefronts we can see most pressure is probably in the beginning 1/3 portion of the can, accordingly we can use a dense mesh here, and use a more open mesh in the later 2/3
 

If you pump air from one tube into a wider tube, the pressure will drop when it enters the larger chamber. Simple physics. By adding wadding the pressure waves will be diffused far better than adding rubber or foam though. Something similar to acoustic wadding or felt would work well, closed cell foam or rubber doesn't actually give the pressure wave far to go.
 
Because of the differences in the way airsoft works compared to real firearms you need to stop thinking about how something like a real suppressor works and more like how you dampen a speaker enclosure or an exhaust muffler.
 
More to the point, as mentioned above - if we're talking about a can on an AEG, what comes out the front is way less of a consideration than what comes from the gearbox and piston assembly.
 

Even more than Katie Price

I was watching Masterchef Australia last night. Someone made a meringue and everybody cheered.
That's strange I thought, in Australia they usually boo meringue 

Bringing Airsoft-forums kicking and screaming into the 21st Century I asked ChatGPT to summerise the previous 275 pages.
 
Question for experienced users, how did it do?
 
n00bs - take with a pinch of salt!
 
The thread on the Airsoft Forums UK about the Tokyo Marui MWS spans numerous pages and provides extensive insights into various upgrades, performance enhancements, and common pitfalls to avoid for this popular gas blowback rifle (GBBR).
### Key Upgrades
1. **Barrel and Hop-Up Units**:
   - **Prometheus and PDI Barrels**: Users frequently recommend upgrading to a tight bore barrel from brands like Prometheus or PDI to improve accuracy and range.
   - **Maple Leaf Buckings and Hop-Up Units**: Maple Leaf hop-up rubbers and units are favored for their consistency and performance in varying weather conditions.
2. **Bolt Carrier Group (BCG)**:
   - **Guns Modify Enhanced BCG**: Upgrading to a Guns Modify bolt carrier is advised for enhanced durability and smoother cycling.
   - **Ratech Steel Bolt**: For increased longevity, especially under high-stress conditions, Ratech steel bolts are popular among experienced users.
3. **Internal Parts**:
   - **NPAS (Negative Pressure Air System)**: Installing an NPAS allows for easy adjustment of FPS, making the rifle versatile for different field requirements.
   - **Upgraded Nozzles**: Users often suggest upgrading to reinforced nozzles from brands like Angry Gun to prevent breakages under high-pressure gas use.
4. **Magazines**:
   - **G&P and Prowin Magazines**: These magazines are noted for their improved gas efficiency and reliability compared to the stock versions.
   - **Magazine Valves**: Upgrading to high-flow magazine valves can enhance the gas efficiency and consistency of shots.
5. **External Parts**:
   - **Handguards and Stocks**: Many users customize their MWS with Magpul or BCM handguards and stocks for better ergonomics and personal preference in aesthetics and handling.
   - **Rails and Mounts**: Upgrading to lightweight rail systems from brands like Daniel Defense or Geissele is common for reducing weight and adding accessories like optics and grips.
### Things to Avoid
1. **Cheap Internal Upgrades**: Avoid low-cost internal parts that promise high performance but often fail under pressure, leading to more frequent repairs and inconsistent performance.
2. **Overpowered Gas**: Using green gas or other high-powered gases can cause undue wear on internal parts if not properly upgraded to handle the increased pressure.
3. **Non-Specific Accessories**: Generic accessories that are not designed for the TM MWS can lead to poor fitment and performance issues. It’s essential to use parts specifically designed for this model to ensure compatibility and reliability.
4. **DIY Modifications**: Unless you have extensive experience, DIY modifications to the gas system or hop-up unit can lead to more harm than good. It’s recommended to use tested and reviewed upgrade kits.
### General Tips
- **Regular Maintenance**: Regular cleaning and lubrication of the bolt carrier group and other moving parts are essential to maintain performance and longevity.
- **Field Testing**: Always test your upgrades in a controlled environment before taking them into a game to ensure reliability and performance.
- **Community Insights**: Engage with the airsoft community for advice and reviews on the latest upgrades and modifications to keep your TM MWS in top condition.
For detailed discussions and personal experiences, the Airsoft Forums UK thread is an excellent resource where community members share their insights and updates on the TM MWS【6†source】【7†source】【8†source】【9†source】.
 

Magpul bits arrived, I just need to buy the OD stock and trigger guard next 😁

Anywaaaayyyyy....... 😉
 
150 notes for a pistol that looks like Christopher Walken has been keeping it safe. 
 
 
 
But it's okay, BOTH the mags leak.

I wonder how many people bought the golden eagle gbbr's thinking that they are the same as the double eagle

Nuprol.

A gun that only shoots certain people 😄

https://www.airsoft-hub.com/item/30945-airsoft-kit
 
I think i'd struggle to spend that much on that kit new from a shop