Originally Posted by chead
And you can install that with the flash hider pinned?
Basically, anything that says "drop-in" or "two piece" can be installed with the muzzle device already pinned.
I'm primarily looking at the KAC because it's the standard military issue and I'm not worried about shooting sub-MOA with this thing. But if I do get a bug and want to go with a FF assembly, my first choice will be Centurion Arms. They are made in San Diego at the JD shop, and appear to be a very good design. They are also lighter than the equivalent Daniel Defense rail and utilize the standard barrel nut.