The latest weaver/picatinny base rifle scope mount rings from Nikko. Machined in solid steel with the very popular quick detach quick release lever lock system that allows you to take off and re-attach scopes with ease and speed.
An important point to note with these mounts is that for some reason only known to Nikko they have designated the height profiles one level above what they are in comparison to most other mounts. So, the high is really a medium, medium is low and low is extra low. As such there is actually no true high profile model in the range. See individual model listings for very detailed height and fitting data