Aim7 3-Lug Muzzle Device Adapter 1/2x28, 1/2x36, 5/8x24, M135.1LH Tri-Lug

Kaw Valley Precision 3 Lug Barrel Adapter - 1/2x28

Kaw Valley Precision 3 Lug Barrel Adapter - 5/8x24

Kaw Valley Precision Thread Adapter - M13.5x1 LH to 1/2x28

SICo 3-Lug Muzzle Device - 5/8 x 24 - 9MM

Aim7 3 Lug Barrel Adapter - 1/2x28 Steel Black

Kaw Valley Precision MACH 3 Modular Linear Comp with M13.5x1 LH Thread Adapter

Kaw Valley Precision Thread Adapter - M13.5x1 LH to 1/2x36