The porting on the barrel really made it quieter.
The muzzle break like that is on my is for looks.
If you had an extension that was just porting that might work.
The can that Trinity has on his barrel works.
“Do not yearn too much for a sword made by a famous smith. This is because even if you give a good man a sword worth ten thousand coppers, he will not be able to beat a hundred men each holding a spear worth a hundred coppers.” - Asakura Takakage Toshikage, 1462-1482
Whatever your hand finds to do, do it with your might; for there is no work, nor device, nor knowledge, nor wisdom, in the grave, where you go.