You could probably use a jam nut instead of a crush washer with the VG6 Precision Gamma 556 High Performance Muzzle Brake. However, I recommend contacting VG6 Precision to confirm that the jam nut will work just as well as a crush washer with the VG6 Precision Gamma 556 High Performance Muzzle Brake.
This VG6 Precision Gamma 556 High Performance Muzzle Brake does not have a hole for pin and weld. However, the VG6 Precision Epsilon 556 High Performance Muzzle Brake has a hole for pin and weld.
https://www.opticsplanet.com/aero-precision-vg6-precision-epsilon-556.html
If the threading of the VG6 Precision Gamma 556 High Performance Muzzle Brake match your barrel threading then yes, it could work with a 5.7x28.
Yes, the VG6 Precision Gamma 556 High Performance Muzzle Brake will fit a Faxon .233 Wylde barrel.
Yes, the VG6 Precision Gamma 5.56 High Performance Muzzle Brake will work as long as he threads on the barrel are 1/2x28.
Yes, this will be compatible.
No, currently the Fortis Control muzzle brake and Rainier Arms XTC 2.0 are the only ones compatible with the Fortis Control Shield.
You will need to do your own due diligence and confirm with your local BATFE office as to what your local laws and regulations are, compatibility cannot be confirmed because one is a suppressor that makes 0 mention of VG6 muzzle devices and the VG6 muzzle device makes no mention of compatibility with any aftermarket accessories.
This muzzle device will work on most rifles with a 1/2x28 muzzle thread pitch.
Yes the CAGE installs in moments onto dual chambered muzzle devices such as the GAMA556, GAMA300BLK, and EPSILON556.