I know this is a old post but I wanted to reply for anybody else looking for the same thing. I have cases from a site called case club, they have a FN SCAR case that I bought and it fits my CZ Bren 805 carbine w ACR stock perfectly w literally two little slits in the foam. Also the foam is very high quality and very easy to cut if you want to make adjustments to the cuts already done. It was my very first non pelican case because in the past I only trusted pelican cases, but this case is very high quality and I plan on getting more. Hope this helps anybody looking for a custom cut high quality hard case.
