Marui HiCapa 5.1 magazine problem???

[Andrew the airsofter]

Is it alright if the fill valve o-ring is missing? Can anyone fill up the magazine without the gas escaping?? If you have the same problem please reply. (TM MaruiHiCapa magazine).

[Monty]

All the valves need an o-ring, that's what stops the gas escaping. No o-ring, lot's of issues.

[Rock-climby-Dave]

Do you mean the one in the middle of the valve or on the outside that rests between the valve metal and metal on the gas tin?

[proffrink]

I think what's being drived at by Dave: If it's the external one then most TM GBBs aren't designed with a 'silent fill' o-ring, and that's why they spurt gas everywhere. I believe this isn't a fully rectifiable problem in all of their guns as adding your own o-ring on some brings with it some fulling issues (i.e. it not depressing the valve enough to fill the magazine fully). Not sure if that group includes the Hi-Capas though, so you may be able to add your own if it's annoying you.

 

If it's the internal o-ring from the valve (i.e. the one you obtain threw unscrewing the brass from the aluminium tube) then yes, you very much need that like Monty says.

[TheGrover]

I lost an o ring from one of my fill valves, I even found it in my dump pouch and threw it away before I realised where it came from. Mag still fills and holds gas, it's just a bit louder when I'm filling it

[proffrink]

Yes, but that's WE (who put silent fill valves in all their pistol mags) going from your profile on the left. Probably not the case with the Hi-Capa that there was ever one in there (TM haven't been putting in silent fill valves until very recently).

[Rock-climby-Dave]

TM Tend not to, most other companies fit them from the factory.

You CAN buy them, but I don't bother, it has not negative effect beyond being louder

[proffrink]

Yeh. I've noticed their new M4 and M870s have them OEM now. Like I said, some people were documenting issues with the aftermarket ones because it wasn't depressing the valve enough - not on all brands though. Can also cut some some silicone tubing as it compresses better than an o-ring. I did that and it worked quite well on the Glock magazines.

[Andrew the airsofter]

Thank you everyone for your sugestions. Bideaway, it is the external o-ring.

[proffrink]

There was never one to start with then most likely. Like Dave posted, there are o-rings made for the fill valves, but it's probably not worth bothering.