I was over at the Troy website looking around, the only mid-length Delta rail I see is the M-Lok style. Having two M-Lok float tubes already, I'm not a fan. I find I'm always working around the gas block, or even barrel contact with the M-Lok bolts.

So, Quad Rail for me. Is the Troy MRF a decent rail?

I wouldn't mind a mid-extended tube with the FSB cutout, but not to keen on the M-Lok style.