The Azimuth 5.56 Suppressor is designed with extensive sustained gunfire in mind.
The Azimuth has no barrel restrictions and is rated for belted platforms. From your 5 inch SBR to your Belt Fed M249 this can will handle it all. 

316 Stainless Steel Tube with High
Temperature Cerakote
316 Stainless Steel Baffles
Length: 7.1”
Diameter: 1.50”
Weight: 16.4 Ounces
Calibers: 5.56x45
Belt Fed Rated