First time poster (I think), but long time reader.
Tell me about monolith style uppers. I've got a lower that needs an upper and I'm thinking hard about the monolith style. I've come down to the LMT and the VLTOR VIS options, but are there others I should be considering?
I'm thinking of using an 18 inch barrel with a rifle length upper. I have an M4 length rifle and a 16 inch Varmint barreled rifle, so I'm looking for something with a little more length. Weight isn't as much of an issue for me.
Down the road, how hard are the barrel swaps on the LMT? Can you also swap out the barrels of the VLTOR the same way?
And what's the latest of the POF piston uppers mated with the VLTOR VIS? Is that something I should maybe wait for?

