16 inch 300BLK barrel, does it need a FH or brake?

[Notar]

For years I wanted a AR15 300 Whisper, but I've not been one to wildcat, it was always nice to be able to go in a store and buy ammo if I had not spent the time behind the reloading bench.

The 300 BLK I think will be a good splash. My first barrel will be for my Daughter, a 16 inch for hunting/Predators. I'll snag a couple of SBR's next year and put cans on them for house rifles.

Biggest question is on the 16 inch gun, do I need a Flash hider? I have no idea if it will be a big flashing gun due to the longer barrel and small powder charge. The rifle won't be used for any 3 gun(I don't think), so I'm ruling out a muzzle brake for less noise to the shooter. Maybe a nice target crown will help with tighter groups, this gun will see some bench time(100-300m) just to get my Daughter more trigger time. I think if I ever sell the upper or rifle, it will be an easier sell if it looked more like an M4 with a threaded front end.

95% of the loads will be 125gr Ballistic tips, and I'm sure I'll load up some 220's for giggles.