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Samples in periodicals archive:
In fact, this year alone, her eye clinics in Oshakati, Katima Mulilo, Engela, Gobabis and at Onandjokwe, which bring in doctors as volunteers from all over the world to work with her, have given back sight to over one thousand people.
These non-guns feature the Mark 1 drum back sights and the late Mark 1/ early Mark 2 buttstock assembly.
Simply twist the range dial to the desired distance and both front and back sights move in unison to keep your line of sight true at any distance, eliminating the need for a troublesome peep sight.
Most competitive shooters don't use screw-mount dovetails because clamping allows the front sight to be moved to level against the back sight.