Here is a 223 / .556 suppressor comparison video with 3 HIGHLY DESIRABLE 556 suppressors!
PTR VENT 3
CAT WB 718 HUB
DEADAIR NOMAD L
My favorite was the PTR, CAT Then NOMAD L
Suppressor host is a Noveske Irregular defense 11.5 mid length gas system. die free co Kong fu Hand grip, geissele SSAEX trigger. holosun green dot. SBA5 brace.