m1a socom II mag problem

[deo62]

have a new socom II and having problems with last round in sa 10 rd and 2 20 rd no name mags not chambering last rd and locking bolt open, actually spits last rd up and it just rests on top of mag with bolt locked open, any ideas...normal problem?...quick fixes...all info would be appreciated as I am new to the m1 game

 

[red_zr24x4]

Check out the M14 forums.
Sounds like the 7th round stoppage on a Garand. But for the life of me I can't think of the cause for it(something worn or out of adjustment)

 

[03A3]

I've never had that happen. And the odd thing is 3 different mags are doing it.
I wish I knew what to tell you but I don't. I am interested in finding out what the cause is.

 

[sloughfoot]

Is the rifle properly greased? In the right places? I use lubri-plate, but there are other choices too..