Pro Mag Industries GSG-5pk 1/2X28 THRD ADPTR

GrovTec Thread Protector Converter, 1/2"-28 to 5/8"-24, Black Oxide

CMMG 1/2-28 Thread Adapter, Black - 57DA53A

ProMag Quick Change Adapter Block, Black - PM237B

Kimber America Muzzle Thread Adapter 7/16-28 - 5/8-24, Silver - Precision Fit, Durable - 4700055

Dead Air Thread Adapter 1/2-28 Fits GSG 1911, Black - Reliable Attachment - DA421

Advanced Armament - 1/2-28, 5.56 51T Pingless Flash Hider for 13.7/13.9 P&W Barrels - 65035

GrovTec G-Comp Muzzle Brake 1/2x36 9MM Luger Steel Nitride