Little brass part?

My friend has a KWA G119, and he was looking at this magazine: http://www.airsoftgi.com/product_info.php?cPath=60_62&products_id=1281

Se can't figure out what the part next to the gun is. lol I hope this doesn't make me look really stupid.

Lol thats the high flow valve that the mag has installed. You know that little nub that you press to release the gas from the mag? Thats what it looks like when you screw it out. That is also the reason why the magazine is 40 bucks.

Ok, thank you. Is it worth the $40 to get it?

the magazine yes, i believe a regular one already costs 30 bucks, getting one with a highflo valve pre installed for 40 ought to be a bargain.

I second that as a new high flow valve usually goes for around 15-20 and some even go for more as per TM models. You'd definately be saving some money but you wont have an extra valve if that one wears down (like if you had swapped it yourself). What I would do is tell your friend get the 50 round mag for 50 bucks and then I think the kwa high flow is like 15 on most sites. Swap out the valve (all you need is a smaller flathead driver) and then you have one mean glock mag plus an extra valve to boot.