I mean I'm trying to keep the top of the stock from sticking over the line of the shoulder, which they claim is necessary to control recoil (though I have had zero recoil problems with this carbine). On my collar bone, with the stock even partly collapsed, I can barely crank my head down there. I end up with a neck contorted and hurting. This carbine is simply too tiny for me to pull that off. Either that or my neck is too long.
For example, this is what I mean by the stock above the line of the shoulder:
http://en.wikipedia.org/wiki/File:Hawaii-convoy2003-12-17.jpg
The soldier has his weld, but the stock is not completely tucked in as the Magpul method insists it should be. Note the relatively straight and stable position of the neck, and how the solider has brought the rifle to his head not the other way around. If you imagine pushing the stock down and in, you also have to have the head and cheek weld follow it.
Here is a pic of the Magpul stance:
http://thefiringline.com/forums/showthread.php?t=413222
That fellow looks shorter and smaller than I am, but even his neck is clearly held under considerable tension. Draw a line along the angle of his cervical spine to see what I'm talking about. Note also how the angle of his vision, if he looks straight ahead, is not through the scope but down to the ground. He has to look up in order to see through the scope, with his eye muscles also being stressed.
Maybe I need to get the Magpul Dynamics Tactical Yoga DVD.
Is that the mag spring shooting out the bottom of the magazine of the guy on the ground in the picture above posted by WEG? That may cause a few feeding issues
No that's a type of improvised grenade launcher using the magazine spring.