I am looking for a ring mount for my Brno M21.
The scope is a Helia 8x56 the rings must be at least 0.570 high. Gladly a QD mount.
/Johan

Johan, I believe your scope has a 1" diameter tube. I use the Warne QD rings on my M21 and like them a lot. However, the 'high' rings (Model 2BL) are shown at 0.535", so if your measurement is exact they will be just a little short (0.025"). If you have just a little wiggle room with your measurement, these may work, if Warnes are available over there.

Warne QD's are more than high enough for a one inch tube in 8x56.

I will probably go for a one pice mount.
From MAK.
http://www.kilic-feintechnik.d...f/M_Kat_09_RZ_UK.pdf

Te exakt meassurement is 14,5 mm

/JOhan