High Effeciency Valve in the gat stock?

[Hollywood*]

Does the gat come with a high effeciency valve stock? and it it does how can i tell if it has one?

[hgroberts]

WHen did you buy it, unlikly

[DarthAlan]

I have the same question.
Do the GAT's come with the MT valve? If not, is it a top priority as an upgrade?

[notare]

If your gat was assembled on Nov. 1st, 2005 or after (look at the date on the box), then there's a good chance it came with the MT valve.

No, I don't see it as a top priority upgrade. I'm sure there are a ton of other things that you will need before a new valve.