Yup, that weird cantilever rail works great. If longer, I'd try sticking the PVS30 on there. Totally solid, and at least on this gun with the elongated receiver (barrel is quite low, so far away from the top) it's no where near even the suppressor.
VERY long writeup on the M17S 308 to come in the proper thread but: works well. Took a bit to tune in, finally figured out that it hates some ammo; almost like a .22 LR in that way. But for the ammo it likes, it works great. Around 1 moa with match stuff, and I can hit steel reliably to at least 475 yds with 150 gr ball. So good it needs more scope than 4x, to stretch the legs a bit.
Also: The Zenitco free gift for not sending the switch the first time was their aluminum VFG and... I switched to it. Nice, simple, smooth, non-folding grip with no pokey bits, and I didn't weigh it but maybe not even heavier than the plastic Ergo one I had on there.
A little longer as well, so the switch fits neatly, and totally flat sides almost like it was designed to fit (it was not). Wireties are temporary, if I like it here after a few range visits I am going to drill holes and bolt it on.
Wires need a few more onewraps and wire ties when done, but as with the VFG, doing it slowly in case I want to move things around, to encourage me to fix stuff instead of just committing.