Yes, these come with the Shim/Spacer Kit and Rocksett.
According to SureFire the SureFire 3-Prong Flash Hider w/Suppressor Adapter models SF3P-556-1/2-28, SF3P-556-MK46, SF3P-762-5/8-24, SF3P-762MG-M240 weigh 3.9oz. Model SF3P-50BMG-M2HB weighs 23.8oz.
From what information I could find the DSArms SA58 either has 5/8x24 right handed threads or 9/16x24 left handed threads. The SureFire 3-Prong Flash Hider w/Suppressor Adapter model SF3P-556-MK46 will work with the 9/16x24 left handed thread model and the SureFire 3-Prong Flash Hider w/Suppressor Adapter model SF3P-762-5/8-24 will work with the 5/8x24 right handed thread model.
The SureFire 3-Prong Flash Hider w/Suppressor Adapter may make a "ring" sound while firing.
The SureFire 3-Prong Flash Hider w/Suppressor Adapter model SF3P-762-5/8-24 has a thread pitch of 5/8x24. The product page is being updated.
You will need a 7.62x51 model of the SureFire 3-Prong Flash Hider w/Suppressor Adapter. However, you will need to ensure what your barrel is threaded for, to select a compatible model. The guide at the link below will help provide information regarding selecting a muzzle device.
https://www.opticsplanet.com/howto/how-to-select-a-muzzle-device.html
The SureFire 3-Prong Flash Hider w/Suppressor Adapter that you can use is (MPN:SF3P-762-1/2-28). That's only if your rifle has 1/2x28 threads.
Yes. The SureFire 3-Prong Flash Hider w/Suppressor Adapter will feature a small hole that can be used for pinning or welding the muzzle device to your firearm.
Yes. The SureFire 3-Prong Flash Hider w/Suppressor Adapter can be paired with the Surefire Warden Blast Regulator.
This muzzle device comes in either 5.56 or 7.62 depending on the model you select.