rommelrommel
CGN Ultra frequent flyer
The new Bren 2 stock does everything that the ACR stock does. It folds, retracts, and has an adjustable cheek-riser. Plus the Bren 2 stock matches the existing aesthetic of the rifle with the grid-lines, etc. I love the ACR stock for what it is, and have one on my APC 308. That said, the ACR stock is not the end all and be all of Buttstocks. The new Bren 2 Buttstock does everything the ACR stock does, and matches the rifle while doing it. What's not to like?
Well, I've never had the CZ stock in front of me but a lot of US owners prefer the ACR stock at significant extra expense, so if I was buying from scratch I'd be inclined to go that way.