SureFire 3-Prong Flash Hider Suppressor Adapter 5.56mm M16/AR 1/2-28 Threads. It is made of materials that provide maximum protection under harsh environmental conditions. Functionality is the game's name with the SureFire Flash Hiders features a rear seal that minimizes potential carbon buildup in the indexing system and facilitates suppressor removal after extended firing. Specifications for SureFire SOCOM 3-Prong Flash Hider: Manufacturer: SureFire Color: Black Finish: Matte Black DLC Coating Fabric/Material: US Mill-Certified Heat-Treated Stainless Steel Condition: New Features of SureFire SOCOM 3-Prong Flash Hider Design provides more than a 99percent reduction in flash Multiple bearing surfaces provide superior suppressor alignment and prevent ringing of tines inside suppressor High-precision single-point cut barrel threads create optimum thread interface Inspected for all critical dimensions including concentricity and alignment DLC coating provides maximum protection against harsh environmental conditions and facilitates cleaning after extreme use Serves as rock-solid mounting adapter for SureFire SOCOM Series sound suppressors Labyrinth seals mitigate gas leak from suppressor lock ring Installation requires no permanent modifications to most weapons Mounts all SureFire SOCOM Series sound suppressors Note: SureFire SOCOM Series Fast-Attach sound suppressors flash hider/suppressor adapters and muzzle brake/suppressor adapters are not compatible with previous SureFire Fast-Attach sound suppressors muzzle brakes or flash hiders Package Contents: SureFire SOCOM 3-Prong Flash Hider What firearm models does the manufacturer say SureFire SOCOM 3-Prong Flash Hider is compatible with? The manufacturer says that SureFire SOCOM 3-Prong Flash Hider is compatible with AR-10 DPMS LR-308 M4 M16 M2HB Machine GunSureFire SF3P-556-1/2-28: 3-Prong Flash Hider Suppressor Adapter 5.56mm M16/AR 1/2-28 Threads