'Game Of Thrones' Star My AK-47 Toting Hubby Poses a Risk to Our Kid

3/4/2013 10:55 AM PST

'Game of Thrones' Star Lena Headey -- My AK-47 Toting Hubby Poses a Risk to Our Child


Lena Headey
-- the hot chick in "Game of Thrones" -- says her estranged husband is too reckless to care for their kid, and a key example was Peter Loughran's decision to post pictures of himself showcasing an AK-47 . . . this according to legal docs obtained by TMZ.

Lena was trying to block Peter from taking their 2-year-old son to Ireland. In her legal docs -- filed in her ongoing custody war with her ex -- Lena says Peter has exhibited bad judgment and cannot be trusted alone with the boy.

As an example, she attached 2 pics to her docs -- ones that Peter allegedly posted on his Facebook page, showing him sporting an assault rifle. 

She also claims Peter -- a one-time hairstylist -- has serious alcohol issues, citing a recent case where his car veered into oncoming traffic. She believes it was alcohol-related, but he denied it.

The judge sided with Lena and refused to grant Peter's request to take the kid to Ireland.