You can find the Griffin Taper Mount Mini Stealth Flash Suppressor 5.56 here.

The Griffin Armament Taper Mount Mini Stealth Flash Suppressor is designed to interface with Recce, PHS, and Sportsman series silencers. The Minimalist series also supports the Optimus Mid-Size configuration. Machined from 17-4 PH stainless steel, the Minimalist flash suppressor has 3 flash suppressing tines with integrated anti-reasonance features. The flash suppressor does not require timing.

Specifications:

• Caliber: 5.56mm
• Diameter: 1.075" taper to .93"
• OAL: 1.8"
• Weight: 2.9 ounces
• Materials: 17-4 PH Stainless steel
• Finish: Black QPQ
• Attachment: 1/2X28 Thread