KAC CRS on a 5.56 Rifle?

[SRII]

Does anyone know if I can use a QDC CRS suppressor on my 11.5 KAC upper? Does it fit on the standard 5.56 KAC prong muzzle device?. I also have a 7.62 and am wanting to see if I can start out buying one suppressor but have the flexibility of using it on both.

[R.O.U.S.]

This is very late reply, but hopefully this is still relevant for you.

You can use a QDC CRS on a 11.5 KAC upper, but you will have to change the muzzle device.

You will need this.
https://www.knightarmco.com/14754/sh...suppressor-kit

I have a CRS, and it works great on a .308 SR25. I have also used it on a DD 11.5", and Colt 11.5" upper receivers using the flash suppressor kit that I linked.

However, I feel like the CRS is not the best suppressor for a 11.5" 5.56 upper. While it does suppress, the flash mitigation is worse than my 5.56 Knights QDC CQB. edit (I was using VERY flashy ammo Norma Tac 223, American Eagle, but less flashy ammo would still throw fireballs compared to just using the flash hider)
There are some do it all 7.62 suppressors, but I don't think the CRS is that. Don't get wrong, I like my CRS, but it stays on the SR25.