I've put my mil-spec (1.14") Vltor stock on the G-1 and it fits perfectly. A civilian (1.17") stock would fit, but would be wobbly.
I acquired a civilian (1.17") Magpul CTR knock off, and it is loose - quite annoyingly loose, but functional. I've used a lot of electrical tape to build up the space and it helped immensely.
Last edited by Chooie : 04-22-2011 at 11:20 PM.