A: 21.84mm / B: 100.1mm / C: 21.84mm
I purchased the 20MOA (2093) version of this rail.
Ordered it on Sunday, it was depatched Monday and arrived next day, excellent service. Very good quality product, machined accutately. It was supplied with two sets of fixings un 6x48 and un 8x40, it was a perfect fit. Highly recommend it.