Well GOST,
I was told I can't post any pics until the RECOIL article comes out first on them. Feel free to read my article there
What I can tell you is I have a 11.1" and it's exactly 11.1" and a KX5 will fit inside, but a KX3 is a no-go. It uses a standard Noveske NSR Barrel nut, and weight 8.9oz without the nut.
Planned lengths are 7,9,11.1, 13.5, and 15.