Pistol with Brace: https://www.cmmginc.com/product/pistol-mk57-psb-5-7x28mm/
Pistol Variant: https://www.cmmginc.com/product/pistol-mk57-5-7-x-28mm/
SBR Variant from Silencer Shop: https://www.silencershop.com/cmmg-mk57-banshee.html
Griffin Armament Silencer: https://www.silencershop.com/griffin-armament-gp5.html