Available at Airsoft Atlanta is the Angel Custom CNC Glock Threaded Barrel Adapter for attaching muzzle devices... "The Angel Custom CNC Glock Threaded Barrel Adapter - a 13mm CCW to 14mm CCW inner barrel adapter that allows you to attach flash hiders, tracer units, and suppressors to your VFC Glock.

A tip from ASTKilo23 in sprucing up your Echo1 Spectre RDP AEG... "Is your Echo 1 Spectre RDP in need of some spicing up? Pick up the threaded muzzle adapter to day at your local Airsoft store. For only $15, you'll have the ability to install suppressors, flash hiders, and a wide variety of after market parts!"