jsmithski

most likely they have different gas release valves. Maybe modify them to push more gas.

All bio bbs are shit. Just don’t use them, it’s a gimmick and a total horse shit to call them environmentally friendly. They suck at being eco and suck at being good bbs.

I cut a buffer tube spacer from a 3/16 inch 70D Sorbothane to reduce the shock. To prevent it from getting ripped I’ve added a very thin shim on top of it. Seems to be a good shock/vibration absorbent.

to make sure you’re venting out air - press on the release valve when gassing them for about 5 seconds, then release and see if you can fill em.

What can go wrong with a fill gas valve? They are all the same, simple to fix if leaking. Here’s a pic.

The valve closes the nozzle at one point so no more gas goes to the inner barrel and all the volume left goes to the blow back. Some valves do not seal the nozzle 100% so when blow back kicks in still some gas leaks to the barrel which weakens the blow back and slows down the cycle a bit.

450 FPS with 370mm barrel.

So, anyone else tried installing the KWA rocket valve? Do you like the FPS vs recoil balance? I like how the rocket valve seals the nozzle - perfectly so no gas loss is observed.

There are few ways: 1. Get a valve with smaller ports. It’s the part that goes inside the nozzle (see pic attached). The smaller the holes and the lighter the valve, less gas will go through. If you buy a steel/aluminum valve it will increase your FPS. 2. Get a softer valve spring. The softer the spring the faster the valve closes the nozzle. You can achieve the same by cutting the original spring. 3. Make the nozzle gas exit hole smaller. There are many ways to do that. There was even a company selling so called magic inserts although there’s nothing magic about them, simply restricting gas flow. 4. Get a softer blowback spring. Softer spring will require less force=less gas to complete the blowback cycle. This has more to do with gas efficiency than the FPS output itself. Combined with other points can make a difference though. 5. Shorter barrel will always decrease FPS but if you won’t modify the gas output it will be greatly overvolumed and so joule creep will be enormous. I got a 180mm Crazy Jet barrel which gives now 1J on .2g but 1.4J on .43g.

I usually use Puff Dino 12kg or 14kg but I got 3 bolt sets modified for different FPS output. The one I use the most is shooting 350fps with 0.2g as this is the single auto cqb limit.

There’s a lot of misinformation and false claims calling these bad ass replicas “the worst gbb ever created”. Especially now when they released v2, I think it’s time to give it another shot. Here’s my story... I’ve bought vfc mp5a2 gbb in 2017 and haven’t use much mostly because I only had one mag and it had feeding issues. After some time looking at it hanging on the wall (and because I had few other gbbrs to play with) I’ve decided to make it skirmishable, that’s when I’ve come across nugentgl videos on y2b (long gone unfortunately). The issues vfc decided to skip during their QC (as usually) were easy to fix with aftermarket upgrade parts - this is the core of bad publicity, most of the reviews were made when those were not yet available on the market. I’m a gbb freak so I’ve bought almost all available upgrade parts... ended up with double the price of the gun itself plus I’ve added 4 mags to the set (worth noting the v2 mags fit v1 mp5 and even perform better than v1 mags). The ultimate skirmish ready vfc mp5 gbb part and mod list: 1. enhanced feeding ramp (crusader iirc) - fixes feeding and mag wobbling issues 2. Hop up vsr mod - makes it shoot laser straight and greatly improves seal. I use maple leaf autobot bucking, omega nub and crazy jet barrel. 3. That’s all. Seriously no more. You can still put in all additional upgrades but they will not do much good. Steel firing pin makes sense. And removing ejector lever that keeps scratching the bolt. Let me know if you got one, I’m curious if you had same issues.

Did you take the upper apart? I already had to replace the upper hammer spring twice, maybe that’s your issue. The spring usually looks intact until you remove it.

Here. As Russians would say (about the AK when asked why it has no tacticool shit on it): “No, the rifle is fine!” I only did upgrade the inner barrel, hop and FPS.

Any news, new upgrades etc? It’s cold here so my rif hangs on the wall. I’m so bored I’ve bought the HFC T77 GBB to see if I can make it skirmishable

All depends on the type of game. Milsims may not require lot of ammo. Skirmishes usually need more but then you’re close to off game and can reload any time. I would say 6-7 mags are enough if you CAN shoot additional ones are just there to allow full auto dumps from time to time.

I got 9 and it’s already on the heavy side and I’m over 6 foot tall.

Can anyone tell me which product at rainbow8 do I need to make my trigger nice and snappy? The stock one is horrible. I don’t care for the trigger itself but the action.

Indeed it’s from G36.

It looks kinda cheesy with that front now but it was few years ago when really there were no shrouds yet on the market. At 140psi that gun is a beast.

Here.

Hi guys, not sure maybe some of you remember me from the deleted FB group, I used to sell 5000 rounds box mags for KV. I still have my precious gun but I don’t make any mags anymore - no time for that anymore. Glad the community still holds up.

I thought I’ll let you know that after installing a 370mm 6.03 inner and a KWA rocket valve + spring I had laying around from my other projects, the rifle shoots now [email protected] on power up green gas. Seems like a budget power up upgrade. Good thing about it is that the blow back is not much stronger than in stock, so no additional wear and tear. BTW I’ve bought the rifle for Xmas, got a nice almost unused MWS with 9 mags for £700. I call it a steal. My upgrades for now are: - 370mm unbridged vfc psalm 144:1 barrel - pink autobot bucking - maple leaf omega nub - green gas mod on all mags - DP green sealing buffer - DP nozzle spring set I don’t plan on changing it much visually, I like the stock US Army issue form.