Jump to content

WE Gas Blow Back M4A1 Carbine


Recommended Posts

Well, mission accomplished for me.....

 

I've managed to mod my Gen1 nozzle a little.

 

It was firing at a healthy 500fps on Propane, which is a tad hot....

 

So I took the brass nozzle off, ran a 3mm Die down the end of the Steel Rod to lengthen the threads a little and screwed the brass nozzle back on.

 

Hey presto, she's now firing at around 350fps. And what's better, the whole set-up is adjustable all the way between that range! All I have to do is twist the nozzle a few turns.

 

I've also added a small O ring to the thin part of the nozzle. No idea what effect this has, but hasn't stopped anything working!

 

P1000568.jpg

 

Interestingly, she now hops perfectly for 0.2's!! so full of WIN all round.

 

I think when I get time, I'll run the Die down a bit further so I can put a small 3mm Locking nut on behind the nozzle assembly, and then make up a larger collar to replace the small plastic one that sits behind the nozzle assembly to help keep everything super square.

Link to post
Share on other sites
  • Replies 7.8k
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Popular Posts

Heres my latest custom job, a WE GBBR version of a Colt Slab Sides Carbine. If anyone knows a pla ce that could machine me a proper outer barrel, I would like to get in contact with them and have a pr

Heres my custom WE M733. I have a modified RS Bushmaster upper receiver as well as RS buffer tube, castle nut, stock, stock plate, pistol grip, front grips, front sight, and some various other small b

Hehehe, Im with you Hwagan. I dumped my LM4 like a bad habit a few months ago and switched back to the WE platform. Used the extra money to get myself a trademarked M16, slapped a RS A2 upper receiver

Posted Images

Slight update on www.horizontactical.com

 

Pre-orders for stuff coming within a week or so!!

 

Price quote and availability on 6.02 Chrome plated barrel + new hop up will be provided tomorrow.

There we go our prayers have been answered........CO2 assembly will be here in 2 weeks........it is all coming together.
Link to post
Share on other sites
I think when I get time, I'll run the Die down a bit further so I can put a small 3mm Locking nut on behind the nozzle assembly, and then make up a larger collar to replace the small plastic one that sits behind the nozzle assembly to help keep everything super square.

Just make sure that whatever mod you do (particularly adding that locking nut) you must compensate on the plastic collar so that the total length remains the same. Too long and you'll be ramming your nozzle dead. Too short and you won't close the seal and drop your performance.

Link to post
Share on other sites
Just make sure that whatever mod you do (particularly adding that locking nut) you must compensate on the plastic collar so that the total length remains the same. Too long and you'll be ramming your nozzle dead. Too short and you won't close the seal and drop your performance.

 

 

Aye, I was going to make a stepped bush, so the locking nut could sit inside it, so the diameter would be wider. Thus providing better lateral stability. But yeah, keep the length the same.

Now to find some suitable material.

Link to post
Share on other sites

Just got the new information from WE today. All spare parts and reinforced parts are selling in the market, they mainly for gas charge version's WE GBB M4 (all existing versions selling in the market). For CO2, WE said that just need to order 2 small parts for exisiting's versions WE GBB M4. Then can use the CO2 mags. For the 2 small parts, WE will notice us as soon as possible. So your existing WE GBB M4 can fit for 2 kind of mags (gas charge and CO2).

Link to post
Share on other sites
Today just got the new design with Hop-Up inner barrels and the new hop-up rubbers. Also the Complete Upper Receiver Sets are available too.

 

For the new inner barrels, now just available at 363mm only. If you need 262mm, then we need to help to cut it from 363mm's inner barrels.

 

 

Cool news!! Can't wait to get one! :)

Link to post
Share on other sites
Adding a second o-ring was/is a popular mod on the SHOEI Escort systems.

 

It helps maintain consistent FPS in full auto.

 

The escort system (or the WE modifed escort system) is powerful in semi - but FPS drops considerably in full auto.

 

Cutting in a second o-ring helps to correct this.

 

A redesigned airshaft also fixed the problem, as trialed and implemented on SP M16s out of Escort's shop.

 

Link to post
Share on other sites
Today just got the new design with Hop-Up inner barrels and the new hop-up rubbers. Also the Complete Upper Receiver Sets are available too.

 

For the new inner barrels, now just available at 363mm only. If you need 262mm, then we need to help to cut it from 363mm's inner barrels.

 

 

So this is the "new" hop that should solve all of our issues?

 

If I read this right, I just take out the old barrel and hop rubber, and slide these in and we're golden right?

Link to post
Share on other sites

I haven't seen anyone else mention this but please let me know if I'm mistaken.

 

Ahem, right now there are multiple ETA's for upcoming WE products listed on the Horizon Tactical website and the WE SCAR has an ETA of 4/30/2009.

 

horizentacticaldates.jpg

 

I'm thinking this date is only for the pre-order but figured it couldn't hurt to share.

 

Has anything been said about this date being real, or is this nothing to get overly excited about?

 

 

 

Link to post
Share on other sites
I haven't seen anyone else mention this but please let me know if I'm mistaken.

 

Ahem, right now there are multiple ETA's for upcoming WE products listed on the Horizon Tactical website and the WE SCAR has an ETA of 4/30/2009.

 

horizentacticaldates.jpg

 

I'm thinking this date is only for the pre-order but figured it couldn't hurt to share.

 

Has anything been said about this date being real, or is this nothing to get overly excited about?

 

 

Yeah, I noticed it earlier...but $55 for the mags? cripes...that's kinda steep. Is it gonna be similar in price in HK?

Link to post
Share on other sites
im not sure whether u all notice this or not but LAT just uploaded some vids in youtube on how to install your LAT parts ;)

 

http://www.youtube.com/user/Latparts

 

I just watched the piston head video.

 

Super glue to hold the o-ring guides in place? Whoa.......not cool.

 

I like how they addressed the problem of the piston head and 'op rod' getting so cold that it would stop moving - the metal got so cold it would stick. (Krytox helped this problem in my gun).

 

In this design, the 'op rod' is running through rubber o-rings as the guide - less metal to metal contact, so freezing will be less of an issue.

 

But supergluing them in place? No way. LAME.

Edited by rottenotto
Link to post
Share on other sites

Being overly impatient for the new hop to arrive I tried to modify my old one with a dremel which flew from my hand and into a pile of garbage never to be seen by the eyes of mortal men. For the past 12 hours I've been experimenting with different materials to use in place of the old and missing one and I've come across a very effective solution: glue gun.

 

I had to stick a screw driver (slightly smaller than the inner diameter of the barrel, around 5.5mm) into the inner barrel first to prevent the excess glue from mucking up the inside as well as to mold a reversed "U" hop profile (similar to the one on my Tanaka .500 which has an incredibly stable hop). The hot glue is then squeezed on the recess for the hop rubber with some excess ontop.

hopmod.jpg

 

Image of inside the inner barrel showing the profile of the injected hot glue after forming against the screw driver.

100_1285.jpg

 

To clean the outside flush against the barrel, I used a cutter heated up by a candle so I could scrape away at the excess material without leaving any tool marks.

100_1284.jpg

 

The end product looks as if it were cast directly from a mold.

100_1288.jpg

 

I was able to test fire it for about 20 rounds by which time my stock part #42 (500fps version) broke so I had to stop. I did however notice the trajectory to be flat (set to 1/8 turn from zero) in all the 20 odd rounds I got to fire off; no more sever over-hop of the original first gen part. Opening it up again after testing, there were no signs of damage from use. As soon as my new nozzle arrives I'll test this further to see if I wouldn't have to buy the new hop and barrel design.

 

edit:

I forgot to mention I tried other stuff like rubber and silicon but both were too soft from the lack of material and would have the nub fold down and cause even more hop-up effect. The hot glue is more rigid and not as 'gripy' as the other two materials so the nub would slip over the bb and give it the right amount of spin.

Edited by renegadecow
  • Like 1
Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use and the use of session cookies.