Help with magazine ID

[romad97]

I have been looking for a 223 magazine for a while for my build that is starting to come together. I realized today that there are two different magazines that look similar and I honestly don't know which one I need. My action is a 4.4 CF SA model 10 top bolt release. These are the two magazines that I can't tell the difference between.

Model 55155
http://grabagun.com/savage-arms-5515...-botr-mat.html

and model 55154
http://grabagun.com/savage-arms-5515...4-botr-bl.html

Are these actually the same magazine? They look identical to me.

And then there is this one, also part number 55155 but it looks completely different than both of the others.
http://www.ableammo.com/catalog/sava...-p-105585.html