SSPKali

In my mind the Clutch cover of fortunate son (much better than CCR - fight me!) or the Doom Eternal remix soundtrack. In reality “yackity sax” (Benny Hill theme)!

ASG gas in the beige / sand coloured cans. Only ever go to Abbey 144a or Nuprol Red at extremes of weather!

370mm barrel will increase the power, cool if you are after that but a pain if you end up over chrono limit 😂

Small alteration to my Direct Action Gear dump pouch. I already had the Esstac Kywi in it but I added a molle popper to keep the 3rd column of molle against the belt and hold it open better. Then I added some elastic cord and cordlock to allow a can of gas to be stowed in there too. The cordlock is ziptied to the back of the pouch so I can grab the knotted end and pull it tight one handed.

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】.

Air seal as stock on many guns is pretty bad. Just a case of eliminating it step by step. Piston head to cylinder, cylinder to cylinder head, cylinder head to air nozzle (always bad with those plastic ones!) and air nozzle to hop up rubber. With a good air seal I have got 1.05J from an M90 spring

I have been wondering about this too - AirTac make the mag well adapters (either M4 or MP5 mag versions) but you need to borrow some parts from a donor MWS MAG. I have seen people put the line direct into the fill valve of a MWS mag and refill from a speed loader. Probably better for DMR applications where getting through rounds is less of an issue!

So the M105 spring (which should give about 105m/s) was giving 118m/s! Seems the air seal and shimming is really good. M95 ordered from AK2M4 and fitted with the 40shore piston bumper on the cylinder head and full tooth sector gear. Now out putting 278fps on 0.28g with a little hop and seems a little quieter. 6 beeps of precocking and it is really snappy and can give 21rps although I have it on 3rd burst to conserve ammo. Turningy 1000mAh 7.4v fits in the hand guard really well and I have heat shrinked the cables to the barrel to keep them out the way and make battery changes less of a ball ache.

I have a few different shore rating spacers on their way to me and I’ll give them a go. I read up on the silicone mod and it sounds a bit fiddly but can be tuned to suit the build and customised. Just rebuilt the gear box with a full tooth sector and M105 spring - might be running a little quieter and an extra beep of pre-cocking it is still very snappy. Still need to check FPS but that is a bit of a PITA and I need to take it apart again for the buffer pad 😂

Never cone across that before, although I have seen the silicone pads that places sell to replace the std rubber pad on the cylinder head. How durable is the silicone? I have a spare SHS cylinder head so can give it a go.

Spare 13:1 gears and M105 spring ordered as I like empirically testing such things, also interested to see if it is quieter with longer stroke / softer spring. Happy with performance now but it does give a bit of a SMACK at end of the stroke (even with POM head and padded cylinder end!) 😁

I have been running TM and GM nozzles without it and had no issues, pretty sure the end of the bolt carrier stops in the receiver end face and not relying on some thin plastic to stop it! Not sure how well that tiny spring would slow the bolt mass and return spring either!

The fake bolt lugs? Yeah they don’t do anything but you can transfer them from the old one if you are really fussed. The GM nozzles are good and the three pack of rocket valves for modding are cool too.

Ok, but if you don’t need the air volume why waste time and battery energy pulling the piston all the way back for every shot?

Ended up short stroking to a) drop power and b) speed up cycle time. Seems my M110 spring was actually a M115 so 3 from pick up / 1 from release to get down to 285fps on a 0.28g which seems best performance from testing. 0.25g were a bit light, 0.32g needed lots of hop and dropped a load of speed. Level four pre-cocking on the Perun AB++ makes for very snappy response and full auto is hovering around 19-20RPS for the once a year I use it. Still being released beyond the port so getting some acceleration before making an air seal. Not sure something as light as a polymer piston is going to have much momentum to make a noticeable difference but this is airsoft so 🤷🏽

Hi all, Now GBBR weather is here I am fettling my franken TM&C M733. I was running 18:1 gears (2 from pick up / 2 from release) with Warhead 35k and 7.4v or 9.9v. Was snappy but a bit noisy. M110 spring giving 1.0J on 0.28g Noise was probably due to the pad on the cylinder head being pounded into submission as it was the OG TM one and probably old enough to vote! Plus the nozzle was lose and wobbly contributing to midcap syndrome. New SHS cylinder head on its way, POM piston head and some SHS 13:1 gears to fit. The cylinder is 3/4 ported and probably has a ~36mm air stroke. This is probably ok for the 300mm barrel and 0.28g BBs but might be slightly under according to some? By dry fitting it with an old sacrificial gear and cycling it looks like -4 on pick up -1 on release is what is needed to stop over travel on the piston….this seems rather extreme! I was going to start at -2 pick up as gears will be cycling faster and I don’t want tappet timing issues! What are peoples thoughts? Any experience with this?

Make sure the tappet plate isn’t being jammed between the sector gear and gearbox casing, I have had this after perfectly shimming the gears and then wondering why it sounded tight.

Long time; no fettling. Getting the MWS ready for next weekend and had a play about with some Guns Modify parts. There is an issue where the MWS can self-adjust the hop down as it cycles. This is due to the gas key / guide part rubbing on the hop wheel. I have had this with a very worn TM one (4-5years use) and a new AngryGun one (shocker!) Today I fitted a Guns Modify one and have put a couple of mags through it and found no loss of hop-up. Seems the little cut out at the front is deeper and wider than others. None in stock but sign up for a reminder: https://www.fire-support.co.uk/product/guns-modify-enhanced-nozzle-reset-for-marui-mws-m4-gbb-v2 The second fettling was with the rocket valve - I was running one that I had sanded down by 0.5mm and that worked well during winter temps (sub 10DegC) but was a bit spicy now spring is here! A full length, unmodified, one gave around 245fps, the 0.5mm shorter one around 279fps (ASG Gas, 0.32g BBs, your mileage WILL vary!) I carefully sanded a new one down approx 0.15mm on some medium wet&dry and that tested at around 258fps at 17DegC so exactly 1J With the mag warmed to 22DegC it was stable at 268fps so under the 276fps limit for 0.32g I am happy to run this during the summer without having to resort to very weak gas or lighter BBs. GM do these as a pack of three so you can have a play about with the power and not have to worry about set screws self adjusting and causing issues. Take it slow and keep checking with some digital calipers 😁 Available now: https://www.fire-support.co.uk/product/gun-modify-high-stability--fps-diy-valve-for-marui--gm-mws-m4-gbb-v3-nozzle-3pcs

While I have SADF M83 battle jacket and chest rig <flex> I find I am running my more minimal ones. Spiritus MkV (like the regular mini chest rig but only one pocket deep) with 3x M4 mags and a pistol-mag sized speed loader in a Esstac Kywi on the side to top up the M4 gas mags. Axle dangler plate holds a LBX blowout pouch underneath for a basic first aid kit (and protect my gut a bit!)

ASG Beige gas is about the same as Nuprol 2.0 in terms of pressure. Abbey 144a is lower than Nuprol 1.0 “white gas” and should get it under the limit even on warm days.

Silent fill valve o-rings removed and fill tubes replaced with 7mm ID stainless steel tube, 50mm length from the brass threads. This is a bit less than stock but still gives a good space for the gas to fill above the liquid. The stainless tube is a snug push fit over the alu tube so with some grease and percussive maintenance it goes on and stays on 👍 I filled the mag with ASG beige gas until it spluttered, then tilted and got another 1s worth of fill. Bearing in mind it is quite cool today I was able to fire 140 shots and still have it lock back, the mag was pretty cold by then so I popped it in my pocket for 30sec while I got some BBs and turned on the chrono. It was putting out 230fps on 0.32g and locked back after the 14 shots I fired. Pretty damn amazing! Right, beer o’clock 🍺 “Tell me you know nothing about GBBRs, without telling me you know nothing about GBBRs” 😂