Thanks for the reply. As a followup ->
Heres a pic of the inside of the forend when I modified it for the MagPul Picatinny rail...
The sling mount doesnt go all the way thru... I hope this helps...
So....those two "washers" are part of the vertical light grip that you installed, correct? or is one the sling attachment?
If the sling attachment does not even pierce the inside of the foreend, there is no way that the sling attachment they sent would work as is...it would have to be dremeled down to size then installed....
Either way...it seems like it would need to be dremeled....even with a washer, so it only sticks up past the washer a tiny bit...
Rippspeed1...if one of those is the sling attachment, where did you get those washers? They came from the light grip, correct?