Desert Design and Development has a line of integrally suppressed ARs and a domestic HKMP5SD clone. Like the MP5SD, both the AR pattern rifles and D3LLC’s HK clone have ported barrels that slow supersonic ammunition below the speed of sound to prevent supersonic crack.
![[SHOT 2018]: D3LLC's domestic MP5SD](https://cdn-fastly.thefirearmblog.com/media/2024/05/16/015713/shot-2018-silencer-saturday-out-to-one-mile-edition.jpg?size=720x845&nocrop=1)
