VFC M249 Thread

[Spartan09]

21 hours ago, Nick G said:

Ordered a couple of these to try. If they work then I should be able to use a much wider range of capsules. 

https://www.amazon.co.uk/dp/B0C7Z3N8TY?ref=ppx_yo2ov_dt_b_fed_asin_title

 

I'll report back once thet arrive, but I'm thinking that 25g capsules might be worth a go. It looks as though they use the same thread as the 12g ones. But if not then 2 12g should last a game . I have a 33g capsule, so can check the thread size once the adapters arrive.

Hmmm..  I might order a set myself.

 

And if the puncture pin can be removed, It might be worth seeing if I can retap the threads for the larger cartridges

[Spartan09]

Ordered a pair of those adapters, so hopefully I can make use of them, even if I can only use one, it will be better than jaffa taping around the mag to hold the CO2 in place.

 

Also contacted VFC, and they are going to send a replacement hose for free, so that should be on the way this week along with the box mag mount and screws I have ordered as well

[Nick G]

59 minutes ago, Spartan09 said:

Ordered a pair of those adapters, so hopefully I can make use of them, even if I can only use one, it will be better than jaffa taping around the mag to hold the CO2 in place.

 

Also contacted VFC, and they are going to send a replacement hose for free, so that should be on the way this week along with the box mag mount and screws I have ordered as well

Mine are showing as in transit, so with a bit of luck , may get them in a week or so. If the 33g threads are to large I'm thinking to try a couple of 25g ones. Those are the same thread as 12g as far as I can see and 2 x 25g should last a game . 

 

As I think you suggested, it might be possible to drill and tap the adapters for larger capsules. As long as it'll all fit in the box mag I'll be happy. 

[Nick G]

Adapters arrived today .I've only had a quick look, but 33g dont fit. And the 'spike' looks to be machined in so not easy to rethread, although possibly with a lathe.

 

I'll take one to work with me tomorrow and pop into a bike shop, see what sizes they have that will fit. I 'think' 25 g should  in which case I'll grab a few and see how they last in a game.

[Nick G]

16 and 25g both fit the adapter threads. Not sure if I'll game it tomorrw as I've got some guns to take with me for people.  But if not I'll do some testing in the week.

[Nick G]

Had a try of the adapters. Using a couple of 16g CO2 capsules at the moment . Everything fits easily in the box mag and the 249 cycles happily.  It will also fit in the 200 round R/S fabric mag.

For now I've used a section of pipe from the hpa kit I got for it when the kit first came out ( was interested in different ideas for connecting the box mag) and the oush fit end from the same kit to replace the split original feed and connected that to the CO2 block with an hpa line .

 

I'l take a picture tomorrow. But it allows quick and easy connection . 

[Nick G]

Obviously the 'normal' conecter will work fine, but mine also failed so made this up. 

 

Just a case of seeing how long 2 x 25g capsules last now.

 

Hopefully they will last a game, but time will tell

[Nick G]

Has anyone managed to get a replacement feed for the CO2 mag if their line has burst ?

 

My setup is working fine , but a mate wants me to make him up an adapter so he can run hpa now and then but not make it a perminant thing .  Let him use my modified CO2 'block' and it ran faultlesley all day on his hpa rig . Although he was going through a bottle a game ! 

 

I'm only after the 'block' that clips into the magwell , but happy enough to buy the complete thing if anyone knows if they are available. 

[Spartan09]

On 06/04/2025 at 19:47, Nick G said:

Has anyone managed to get a replacement feed for the CO2 mag if their line has burst ?

 

My setup is working fine , but a mate wants me to make him up an adapter so he can run hpa now and then but not make it a perminant thing .  Let him use my modified CO2 'block' and it ran faultlesley all day on his hpa rig . Although he was going through a bottle a game ! 

 

I'm only after the 'block' that clips into the magwell , but happy enough to buy the complete thing if anyone knows if they are available. 

I got a replacement CO2 line from VFC direct.

 

Line burst at last AI500, so I emailed VFC with pics and they sent one for free as a warranty item.

 

Not sure if you can get just the block on its own, but if you email VFC they should be able to assist

[Nick G]

put m/L crazy jet barrels in mine and my mate's . Fitted with M/L rubbers and slightly closed up  C clip . Early indications are that accuracy is improved with less spread , power level went up a touch too as I used longer barrels.

 

Also ran mine on hpa last weekend . Still using the internal mags , cant be doing with the aeg boxmag idea. Whilst I'm not a fan of hpa I will conceed it worked well, and given the cost of the big CO2 capsules I'll soon cover the £150 the bottle , reg and line cost . Added to which my local site does free refills. I see a mix of hpa and green gas mag use depending on game type. Switching between the two is a matter of a couple of minutes. 

 

Still continue to love the beast, it's just so much fun , and now there are two on site the noise in the woods is impressive !

[Jamiet8790]

Hey guys, thanks for the thread it’s been super handy! Got my 249 and co2 box on the way (little scared about the horror stories you guys mentioned about WGC and UPS). I came across these 45g bulbs, I’m no expert but I think I found a thread somewhere about the size of the 67g bulbs and I think these have the same thread size 5/8-18UNF. If anyone knows more about co2 and if that’s right let me know, but I’m tempted to order some and give it a go once it all arrives 

 

https://www.discountcream.co.uk/threaded-5-8-inch-45g-co2-cartridge-1?utm_source=Google Shopping&utm_campaign=Google Shopping&utm_medium=cpc&utm_term=3842&gad_source=1&gad_campaignid=20513790673&gbraid=0AAAAAD3Qfu4DoWe3-oTBIK_sdAIUsvt5R&gclid=CjwKCAjwz_bABhAGEiwAm-P8Yc2HDQ_tLI-YOYLzPGe39gmgG2ZBxO7sU-HFJCdnmWfY7V1nplHEthoCo8EQAvD_BwE

[Anonymoose]

1 hour ago, Jamiet8790 said:

(little scared about the horror stories you guys mentioned about WGC and UPS)

 

I've used them a bunch of times and had no issues at all.

[Nick G]

I'm going to say that from the picture those capsules are not the right thread size  , you need M16 x 1.5 threads. The big 88g ones are the correct threads but are too long to fit in the box without modifying it.

 

I've used adapters and smaller cartridges but found I went through them very fast . 

[Jamiet8790]

You’re probably right mate, I have zero experience with co2 so literally have no clue. I’m just going by the description on the proact site about the bulbs, vs the thread size listed on the co2 site. Shame if it’s not right, 45g would have probably been a decent middle ground without much need to chop and change too frequently. 

[Nick G]

Actually now I check 5/8 is damn near 16mm so they might fit . Give them a go and please do let us know . Certainly 2 x 45g bulbs would give a decent capacity.

[Anonymoose]

1 hour ago, Nick G said:

Actually now I check 5/8 is damn near 16mm so they might fit . Give them a go and please do let us know . Certainly 2 x 45g bulbs would give a decent capacity.

 

The pitch is wrong. 18 TPI is roughly 1.4mm vs the M16's 1.5mm.

[Anonymoose]

If anyone can post some detailed pics of the block the capsules screw into i can tell you if it's something i can make with different threads to suit different capsules.

[Nick G]

I can get some pics . The block has an integral regulator though . What would be good would be insetrs that screw in to the existing threads . I do have a couple of adaptors that screw in and allow smaller capsules to fit . 

 

 

And the adapters I have . Something like these to use something smaller than the 88g would be good.

[Spartan09]

34 minutes ago, Nick G said:

I can get some pics . The block has an integral regulator though . What would be good would be insetrs that screw in to the existing threads . I do have a couple of adaptors that screw in and allow smaller capsules to fit . 

 

 

And the adapters I have . Something like these to use something smaller than the 88g would be good.

I have the same adapters,  but I have been unable to find a thread tap that can cut a  thread while also working around the puncture pin, as I don't see any way to remove it.

 

I would very much like to find a way to cut a 1/2"UNF thread so I can use 66g cartridges. I have a contact that can supply "expired" cartridges from overhauled lifejackets

[Anonymoose]

1 hour ago, Nick G said:

I can get some pics . The block has an integral regulator though . What would be good would be insetrs that screw in to the existing threads . I do have a couple of adaptors that screw in and allow smaller capsules to fit . 

 

 

And the adapters I have . Something like these to use something smaller than the 88g would be good.

 

I'll have a look into it. The block itself is probably pretty basic and the regulator will come out. Looks like there's a channel drilled inside that's blocked off with a plug on the left.

 

Adapters are probably fairly simple too.

 

22 minutes ago, Spartan09 said:

I have the same adapters,  but I have been unable to find a thread tap that can cut a  thread while also working around the puncture pin, as I don't see any way to remove it.

 

I would very much like to find a way to cut a 1/2"UNF thread so I can use 66g cartridges. I have a contact that can supply "expired" cartridges from overhauled lifejackets

 

The pin's probably pressed or bonded in. Making adapters for ½" UNF is probably as easy as any other.

[Nick G]

I wonder if the bosses that the capsules screw into are themselves screwed in . They do have a slot on top. Next time I dont have a 'live' co2 capsule in I'll have a look at that . 

 

If they are , then replacements with the smaller internal bore might be an option .

[Anonymoose]

44 minutes ago, Nick G said:

I wonder if the bosses that the capsules screw into are themselves screwed in . They do have a slot on top. Next time I dont have a 'live' co2 capsule in I'll have a look at that . 

 

If they are , then replacements with the smaller internal bore might be an option .

 

 

I think that is the case, but they may well be fitted in with sealant too.