Re: 300blk SBR
FWIW,
The AAC and Noveske barrels / uppers seem to be the ones that have the least ammount of issues with being properly gassed.
If you stick to any of their offerings, you will be safe.
Here is my setup:
MK12 MOD-BLK
- Upper:
LAR Forged A3 Upper Receiver
Tear Drop Forward...