CMMG 99DA587 TriLug Mount for Decan 9mm Firearms
The CMMG 99DA587 TriLug Mount for Decan 9mm Firearms is a quick-detach adapter built to standard tri-lug specifications, engineered to simplify suppressor mounting on 9mm platforms. If you're running a 9mm pistol or PCC (pistol caliber carbine) and want the convenience of tool-free suppressor changes, this adapter bridges your barrel's tri-lug interface to CMMG's Decan line of suppressors—or most other standard-dimension 9mm tri-lug quick-disconnect systems. It's the kind of no-fuss component that separates a practical suppressed setup from one that requires wrenches and patience.
TriLug mounts have become the de facto standard for quick-change 9mm suppressors because they're robust, repeatable, and faster to install and remove than traditional threaded mounts. The CMMG 99DA587 is manufactured to those same proven specs, so you're not buying proprietary—you're buying a compatible interface that plays well with other major-brand suppressors that share the same standard. That flexibility matters when you're building a system that needs to work with multiple cans or when you're upgrading down the road.
Installation is straightforward: the mount threads onto your 9mm barrel, and your suppressor's tri-lug interface locks into it with a solid, audible click. Removal is just as quick—no tools required. This makes it ideal for shooters who split time between suppressed and unsuppressed shooting, or who want to swap cans between different hosts without breaking out a wrench every time.

