So I'm going to be getting an m22 Tarzan vest and I noticed some variations between a couple models of the same vest------>. http://www.rusmilitary.com/images/m22_black.jpg. like that vest in the link isn't completely solid on the shoulder parts of the vest. -------->. http://www.google.com/search?hl=en&...g1ziULfTBYzC0AG9VA#biv=i|28;d|jg056llEa96EfM: now that vest is solid on the shoulder part, what is the purpose of this variation?( sorry about the crappy links this isn't the easiest thing to do from a Google tablet haha) Thanks!