DE Noveske N4 - One stop shop

[nathan13n]

Recently got a noveske N4 and absolutely loved it but ran into a few things with the main bits being air seal. So it’s airsoft so I started tinkering to fix some issues to see how we nice we could get this shooting.

Initial review 

out the box it shoots great but on green gas ( vorsk v6) I was only getting 0.8j, the lock back was very intermittent and struggled to hop 0.36g or higher BBs wit the stock bucking rubber. 
 

Upgrade 1 - Nozzle and upgrade springs

i planned on installing a NPAS so i could have some finer adjustment of the FPS and everywhere flagged the DE nozzle just doesn’t work well. This is where the first upgrade comes into play Guns modified 3.5 nozzle, this was a smooth change over while is was going this I upgrade the nozzle return spring this was entirely needed as the stock DE is strong then the standard TM but has also been flagged as a point of breakage so dropped in a Waldo custom MWS 140% spring.

 

After the upgrade we are now sitting at 0.9j with very little deviation while also helping bb feeding.

 

Upgrade 2 - Bucking & Barrel

I think I got one of the earlier guns where the installed barrel was pistol length of around 130mm this is a fast way of keeping the FPS low. So was always going to be upgrade to a full length. Prometheus 250mm barrel was installed with a 4antum bucking. I wasn’t trying to break the bank so went with something that was tried and tested. I use 4antum in some HPA builds and lifts 0.32g and higher easy with great consistency and the Prometheus has also been great bang for buck inner barrels a step up from ZCI but not as high a edgi.

 

After the upgrade we got a huge boost to 1.1j which was great boost but also helped the grouping hugely. 
 

Upgrade 3 - Mag fixes 

On playing a few games the stock mags are not great I struggled on some mags to getting through a full 35 rounds. The best upgrade would be to get TM mags which seal better and have better efficiency out the box. BUT if you have already purchased the DE mags like I had you do have ways to help improve. One the gas routers aren’t great so the best swap is guns modify cold weather router which allow a great deal and work well in cold weather. The mags are also known for leaking and this is where gasket seal is your best friends. I used gasket seal in the top and bottom of the mag seals leaving 24hr to fully dry. While I had the mags apart I also trimmed down the tube inside the magazine to a 1/3 of its sizes which allows more gas into the magazine. 
after 24 hours and checking the seal I am able to get 2 1/2 reloads before needing to top up gas which is a huge improvement. 
 

After upgrade I found the seal and efficiency to be better this also helped push my joules upto 1.2j.

 

Upgrade 4 - ZET plate and Feda Valve 

After getting the seal, mags and feeding consistent. It was team for the zet plate to help the lock back function and install the npas. I went with the Jaeger precision in stainless steel which is the same as the BavTac one which is in titanium so you can save some

money there. It’s really easy to do once you remove the trigger box which is a lot easier than the TM MWS. The Feda valve is a straight replacement and doesn’t really offer a performance upgrade but allows you to adjust FPS to make sure your within site limits. Just to flag as I had already swapped the nozzle to a guns modify it meant this was a smooth insteal of the Feda valve but original DE nozzle are thicker and may need to be glued down to get the NPAS fitted.

 

the zet plate has allowed more consistent lock up once the mag is out of BBs. The NPAS allow me to adjust FPS from 0.8j - 1.4j depending on gas on the fly without doing a full strip down. 
 

overall the upgrades have been really nice to help improve the performance which are a lot of the issues the TM MWS also has ( apart from the mags ). On full tilt on green gas it hits 1.2j, red gas pushes it to 1.4j.  What makes this great is the entry point of the DE N4 it’s almost half the price. 

 

For now I’m really happy with the performance and may look into getting a HPA adapter so will drop a update on this once I tested a few out but absolutely loving the DE a few upgrades and it’s matching a upgraded TM for a fraction of the cost. 
 

Upgrade 5 - Airtac MWS/ DE HPA adaptor

This took a little bit longer as my first airtac had a leak and really wasn’t sent up for the DE. So it’s not as smooth as a drop in that they claim but the dudes at Airtac were great.

 

Sent my Airtac back and indicated I will be running it in a DE which meant the added a green spacer to help it engage the knocker easier ( this as well as spare lips are included) 

 

I still found even after this the fit was very lose which resulted in the FPS being a bit all over the place. Using some plumber tape I was able to shim ( which swap this out for Velcro ) this to sit better. This helped my consistency so much I’m getting constant 282-288 on 95psi which was great for a system which is running on air tank given me great performance all year round ad I struggle with the gas mags in anything below 10degrees. Using HPA you will need to regrease kit bolt and trigger unit more as you don’t have the silicone from the green gas to coat bits. Even with the extra weight of the tank, line being a bit more restrictive the increase in reliability of the feeding, constant FPS is great and you have the great tuning being able to push the adapter all the way to 150psi which gives you a really strong kick and have the npas I can balance it out and get the Js I need. 

Edited January 2 by nathan13n
Updating with airtac review

[sjhirst]

Nice write up,

Ive been looking into getting one myself. The price seems very good for what you get.

[nathan13n]

Yeah honesty. Was speaking to a few people at my local airsoft plantation, would be intresting to see how it holds up to use. Got a friend who spent 1200 in total ( includiong the gun ) on the TM MWS. Use mine and say it performs the same and all in im about £550 with no accessories. Will post a update once i have the Airtac adapter and longevity as it will get used heavily. 

[YnysMongrel]

Hi, apologies for thread hijack! 

I'm after an A2 style buffer tube to fit the Cyma Noveske N4 lower, are there any that are guaranteed to fit?

I've heard stories of incompatible threads.

The reason is, I have a nice ex-EBairsoft Magpul PRS2 clone (from the days when they were called EbayBanned and before Magpul hit them with a cease and desist!)

and I'd love to put it on a black Cyma CGS Noveske N4 GBB Receiver NSR9 Rail Set from HPA. A sort of urban sniper set-up!

It is the version that will only fit on a completely round buffer tube, not the later version with the slot for the 'fin' on adjustable stocks.

[ButcherBill]

There are no guarentees in airsoft...

 

https://www.patrolbase.co.uk/specna-arms-stock-extension-for-specna-arms-pdw-stocks

https://www.sixmm.com/en-gb/products/ares-extendable-buffer-tube-mid-for-ares-m45x-aeg

[GiantKiwi]

3 hours ago, YnysMongrel said:

Hi, apologies for thread hijack! 

I'm after an A2 style buffer tube to fit the Cyma Noveske N4 lower, are there any that are guaranteed to fit?

I've heard stories of incompatible threads.

The reason is, I have a nice ex-EBairsoft Magpul PRS2 clone (from the days when they were called EbayBanned and before Magpul hit them with a cease and desist!)

and I'd love to put it on a black Cyma CGS Noveske N4 GBB Receiver NSR9 Rail Set from HPA. A sort of urban sniper set-up!

It is the version that will only fit on a completely round buffer tube, not the later version with the slot for the 'fin' on adjustable stocks.

 

You're going to be shit out of luck basically, it's a proprietary receiver extension. GBBR spec stock is different from AEG spec, and a RS one uses a different spec as well - not that the RS one would work with the N4, as it has different threads.

[YnysMongrel]

Does anyone have the thread spec for the CYMA N4 lower? is it compatible with TM MWS? I have access to manufacturing and could actually make one.

[GiantKiwi]

6 hours ago, YnysMongrel said:

Does anyone have the thread spec for the CYMA N4 lower? is it compatible with TM MWS? I have access to manufacturing and could actually make one.

 

CYMA CGS isn't an MWS. The only things which are potentially compatible are the mags. Everything else is T8's spec.

[Nick G]

Got my N4 yesterday as a Christmas present from the wife. Started fitting the bits today that I pre ordered. Ergo grip feels nicer in the hand and is a more comfortable angle for me. 250mm Crazy jet has gone in along with a Flamingo rubber and a Jaeger precision nub. Nice consistant 1.1j now which is ideal. However , my usual GBB weight .30's are heading for the moon with the hop fully off Lol. .36.s seem ok with the hop still off. I think I might need to either go back to the stock nub or run the N4 on heavier ammo . All my other GBBRs are set up for .30's as a good compromise , but will game it a bit and see , I don't mind going heavier for an indevidual gun. 

[GiantKiwi]

4 hours ago, Nick G said:

Got my N4 yesterday as a Christmas present from the wife. Started fitting the bits today that I pre ordered. Ergo grip feels nicer in the hand and is a more comfortable angle for me. 250mm Crazy jet has gone in along with a Flamingo rubber and a Jaeger precision nub. Nice consistant 1.1j now which is ideal. However , my usual GBB weight .30's are heading for the moon with the hop fully off Lol. .36.s seem ok with the hop still off. I think I might need to either go back to the stock nub or run the N4 on heavier ammo . All my other GBBRs are set up for .30's as a good compromise , but will game it a bit and see , I don't mind going heavier for an indevidual gun. 

 

The precision nub isn't compatible with the DE without signicantly modifying the arm. I just swapped back to an omega nub, which works perfectly.

[Nick G]

2 hours ago, GiantKiwi said:

 

The precision nub isn't compatible with the DE without signicantly modifying the arm. I just swapped back to an omega nub, which works perfectly.

Thanks for that . The nub fits fine , but rather than faff about I'll swap in an Omega .

[nathan13n]

1 hour ago, Nick G said:

Thanks for that . The nub fits fine , but rather than faff about I'll swap in an Omega .

 To use the Precison nub you need to slightly sand down the hop arm. Jaeger precision has a video on it.

 

if you don’t remove it you end up with it applying pressure with 0 hop which send even 0.40g to the moon.

 

i have found with my Mr Hop and omega bucking I can hop 0.4+ with no issue but with price I still with the 0.32/36g

On 11/12/2024 at 15:54, YnysMongrel said:

Hi, apologies for thread hijack! 

I'm after an A2 style buffer tube to fit the Cyma Noveske N4 lower, are there any that are guaranteed to fit?

I've heard stories of incompatible threads.

The reason is, I have a nice ex-EBairsoft Magpul PRS2 clone (from the days when they were called EbayBanned and before Magpul hit them with a cease and desist!)

and I'd love to put it on a black Cyma CGS Noveske N4 GBB Receiver NSR9 Rail Set from HPA. A sort of urban sniper set-up!

It is the version that will only fit on a completely round buffer tube, not the later version with the slot for the 'fin' on adjustable stocks.

The CYMA CGS is a good system but it’s a MWS style gbbr meaning Cyma has updated bit that the my thought were needed so some of the internals are different, threads and mags are also slightly different. Where the DE is pretty much a straight clone of the TM MWS system to the point we’re being nosey I was about to switch the bolt+ trigger box from my maters TM and the DE still worked flawlessly also would argue the DE has a better trigger feel. 
 

So for parts and spares you have to hope other brands support the CGS system otherwise you just waiting in CYMA

[sjhirst]

You might have seen them already, but check out Middle age gamers youtube channel. He does some cgs/mws comparisons.

[nathan13n]

Hahhah i did see his it was the reason i got the MWS instead of the CGS. CGS is a great system but i just prefer the ease of access to parts and upgrade bits. 

 

[sjhirst]

yes, i will go for the mws platform as well. A lot more versatile in regards to upgrades etc by the looks of it!

[Nick G]

Omega nub now fitted and working very nicely . Best guess at hop setting then a mag full of tracers down the garden. .30's overhopping a smidge so a small adjustment required when I can get out in daylight. 

[luc921]

On 14/12/2024 at 12:27, YnysMongrel said:

Does anyone have the thread spec for the CYMA N4 lower? is it compatible with TM MWS? I have access to manufacturing and could actually make one.

They are mil spec. I had a cyma n4 and the buffer tube can fit in my angry gun lower. 

[YnysMongrel]

On 26/12/2024 at 21:26, nathan13n said:

 To use the Precison nub you need to slightly sand down the hop arm. Jaeger precision has a video on it.

 

if you don’t remove it you end up with it applying pressure with 0 hop which send even 0.40g to the moon.

 

i have found with my Mr Hop and omega bucking I can hop 0.4+ with no issue but with price I still with the 0.32/36g

The CYMA CGS is a good system but it’s a MWS style gbbr meaning Cyma has updated bit that the my thought were needed so some of the internals are different, threads and mags are also slightly different. Where the DE is pretty much a straight clone of the TM MWS system to the point we’re being nosey I was about to switch the bolt+ trigger box from my maters TM and the DE still worked flawlessly also would argue the DE has a better trigger feel. 
 

So for parts and spares you have to hope other brands support the CGS system otherwise you just waiting in CYMA

Update: I managed to find this: G&P Marui MWS M4 Gas BlowBack Buffer Tube (Long) from Firesupport and after filing the 'heights' of the threads down a bit it went in ok apart from sticking out too far into the receiver. All fixed now and works great. Now to just make it shoot slower so I can go to my local walk-on...