Whats the differance?
 

Can anyone please explain to me what the differance between the three Magpul stocks at the bottom of the page are? They look like the exact same stock to me but they vary in price.

http://www.fabsports.ca/ar15-m4-c-6_...e=URL_LANGUAGE

the ctr ones use different buffer tubes and the last one is a moe stock.

According to what I could dig up on the model numbers:

The MAG-310 is a milspec model and the MAG-311 is a commercial model.

Thats all I got.

And how do I know which buffer tube they are for? Considering one for a WE gbbr.

I got that from the description but what does that mean?

buffer tube size are different. milspec is 1.15" and comm is 1.17". most airsoft buffer tubes are milspec but just to be sure, you should measure your buffer tube.

Also, CTR has more features than the MOE stock. Friction lock, sling swivel attachment point...

For the buffer tubes
http://www.laruetactical.com/pics/Bu...tock_Specs.jpg

WE uses a mil-spec buffer tube. That's the one you want: Mil-Spec version.

LastSpartan nailed it on the differences between MOE and CTR: the CTR has the friction lock whereas the MOE doesn't. Same goes for QD sling swivel point.