Mine does have threads, and its an AGM. From old reviews, I read that at CYMA Soc 16's dont have threaded barrels. Newer versions might, but I'm not sure. Despite this, I can't say that I'd recommend the AGM version.
Also, the front sight would indeed slide off. I bought one of those things that you tighten with a screwdriver to close it up... I can't remember what they're called... but its one of these:
http://farm4.static.flickr.com/3554/338 ... 88674e.jpg
Anyway, I use a really small one of those where the flash hider used to be, and put a mock suppressor on the threads to cover the barrel.
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