Abstract: Various embodiments described herein include an adjustment turret coupled to an end of a system erector, the adjustment turret operable to pivot the system erector about a pivot point, a main tube to house the pivotable system erector, the main tube characterized in that it has a main tube mounting diameter of less than thirty five millimeters and an interior of the main tube includes: a cavity section, and an additional section located rearwardly of the cavity section; wherein at least part of the end of the system erector is movable along a path terminating at one end in a cavity of the cavity section, wherein a total length of the path from the one end to another end of the path is greater than an interior diameter of the additional section of the main tube. Other embodiments may be disclosed and/or claimed.