I want this:
https://www.rogtac.com/noveske-105-gen3-cqb-switchblock-upper-thread-protector-556mm/
What are the Pros and Cons of only a thread protector?
I am thinking it would not be a problem since I can always add a muzzle device after.
Meh, not much “advantage” to be had. An A2 birdcage and crush washer probably cost less than the thread protector and offer pretty good functionality in the meantime.
I want a War Comp.
The upper is not available with that from the factory. So, i want to get the thread protector version in the mean time and then install the War Comp later.
I am inferring that he was suggesting the cage as a temporary md.
Yes, I agree.
I should have mentioned that the end game is to put on a War Comp.
I guess, in that case there is nothing wrong with getting an Upper with only the thread protector since it’s only temporary.
Does it cost less than an upper with an A2?
Unless they put Rockset on the A2, it’s as easy to take off as a thread protector and acts as a flash hider (obviously) until your Warcomp shows up, and provides a spare A2 if you need one for some reason.
No criticism of the Warcomp, I have one on a Colt M4A1 SOCOM II and like it a lot as a hybrid device.
No pros, no cons, it just protects the threads.
Friends Don’t Let Friends Crush Washer
I gotta ask… Not trying to derail the thread but what makes that a $1,650 upper?
The hat. 
Noveske only has a few muzzle devices to choose from. If you get an upper without one it costs less and then I can put on any one I want.
I’m bored, I mowed most of the morning at it’s 98 outside.
Comes out to about 1500.00 building it off their site, I used the 11" NSR Switchblock rail and add on 1913 pieces because I couldn’t find the 9.5" Switchblock rail.
Barrel w/pinned swithcblock was 465.00
Gen III Upper (stripped) was 290.00 - FA kit was 25.00 Port Door was 12.95 so I figured 23.00 for the kit - total 338.00 for assembled upper receiver
Handguard and rails were 399.00
Charging Handle was 100.00
BCG was 195.00
Thread Protector was 10.00
Cheesy Switchblock Wrench was 10.00
Flaming Hog Sticker was 1.75
Plus you got your hat.
Considering that’s retail, and the individual prices add up to less than the completed upper, either I miscalculated or someone is making some money.