Shop › SCO 3LUG MUZZLE DEVICE 9MM 5/8X24 SCO 3LUG MUZZLE DEVICE 9MM 5/8X24 $75.65 SilencerCo 3-Lug Muzzle Device, 9MM, 5/8X24, Black Finish AC2609 Quantity: Add To Cart Added! SilencerCo 3-Lug Muzzle Device, 9MM, 5/8X24, Black Finish AC2609