Adicted Report post Posted June 23, 2022 I bought a 300 blackout complete upper and added my omega 300 suppressor. Wouldnt cycle my subsonic ammo. Everyone says i need a pistol size gas tube. Well i sold it and am now want to buy the right one. I would like a 7-10” pistol complete upper that will have no issue shooting subsonic. Can you guys post up a few links or reccomemdations on uppers. Share this post Link to post Share on other sites
n2horns Report post Posted June 23, 2022 USe a Ballistic Advantage bbl, 8.3" using pistol gas tube. SiCo Omega 300. If you want to build it with options and lock it all down and just go shoot, get an adjustable GB that way its done. You should not have an issue with the above, I run standard gas block. All other upper components I had, so built it with ability to bury the can into handguard. Link below for BA complete uppers for 300 Blk. https://www.ballisticadvantage.com/uppers/300-blk-uppers 3 1 Share this post Link to post Share on other sites
MULEPACKHUNTER Report post Posted June 24, 2022 Same issue here and the adjustable block solved issue Share this post Link to post Share on other sites
andyyy Report post Posted June 25, 2022 +1 adjustable gas block, it's worth putting on every ar15 that you suppress, if you want it to run optimally Share this post Link to post Share on other sites
