Hehe ok, I think I'm overcomplicating all this a bit :P
I'll just wait for the Madbull one to come back in stock then
And yes I did remove the barrel before measuring it
Also, I tried to remove my flash hider, without success
No grub screws to be found anywhere, I let it rest a bit in hot water in case it was lock-tite'd, and even used vise-grips (with cloth around the flash hider), and all I managed to do is to damage the hider a bit despite of the cloth
