What 300 blackout upper are good for subs and supers. While also being able to reliably run suppressed and unsuppressed.

I have 3 that work great.

12" LaRue
8.5" BCM
9.5" Noveske

All get swapped back in fourth on registered LaRue and Noveske lowers.   Haven't got a BCM lower yet.  My OCD like them to match.

Heard that bcm is not gassed properly for suppressed shooting. Can someone confirm or deny?

If they are, someone should let mine know.

I've shot 98% Subs through my Surefire 300SPS... Never a jam, FTF or FTE....

I've shot a few hundred supers with and without, mostly with, no issues there either...

Bcm is on my list of uppers to get which is why I am interested.

It's all.good...

I got into BCM when I was frustrated with the over a yrlear wait time from Noveske and my Homies in Texas...

I really wanted a .300 blk upper, had a can for it and after 8 months of waiting I called BCM one day after getting a sticker from some where, just to ask their lead time.

Dude says, It's before 3pm, I can ship you one today...  I about pooped...

I got so excited, I forgot I had the other two on order about 4 months later, they both came in a week or so apart...  So now, I got all three...  :)  All shoot well thankfully...

I have a BCM I bought 7yrs ago. It’s been accurate and flawless.