Quick question: how many clicks should there be between 3 and 4 on my bushmaster detachable carry handle for 1/4 and 1/2 adjustment. I have six clicks between mine. Is is 1/4 adjustment?
Normally there are 3 clicks on the fixed carry handle (for 1moa adjustments on a 20" rifle)
Your detachable carry handle having 6 clicks is the standard 'detachable' 1/2 moa per click.
I've not seen 1/4 MOA elevation adjustments (just for windage - and those were MATCH sights).