Griffin Armament Optimus 6, Suppressor, 6.68 Long, 6MM, 17-4 Stainless Steel Construction, Utility Mount (HUB Compatible), Cerakote Finish, Black, Does Not Come with Muzzle Device or HUB Insert GAOP6UM-W The Optimus 6 is a 6mm bore multi-jet fusion additive manufactured (3D Printed) suppressor optimized for reducing system backpressure over traditional suppressors by way of its high-flow baffle design, while maintaining impressive flash and sound reduction. The quad-tine flash hider endcap was painstakingly tuned in conjunction with the low backpressure baffle stack to kill flash at a level almost unseen in other low backpressure suppressors available on the market. This suppressor was optimized for 5.56mm platforms, with the capabilities for high performance on 6mm projectiles.