Diopter Sights on LWRC

[Mufasa]

I was looking to place diopter drum sights on a LWRC M6A2 upper. Are H&K 416 sights ok or are they a bit low and I'm better off looking at Centurion sights?

[paulosantos]

The HK sights designed for the HK416 sit too low on a regular AR.

[Mufasa]

I didn't know though if the LWRC being piston driven like the 416 is also a bit higher than a regular AR chasis. Cheers for the response. :D