My attempt to design a post-apocalypse scrap gun.
The BR-62 or Bike Rifle is the most common weapon that can be found in the wasteland. Using common bicycle parts and metal pipes, this bolt-action rifle is easy to manufacture and quite reliable. The simple design means that the rifle is unlikely to get jammed from weather effects, hence sands and dirt, although it also means the rifle is pretty inaccurate outside of 300 meters. Still this doesn't discourage many wastelanders to mount a scope on the rifle for some long-range sniping.
The rifle using .308 ammunition, bolt-action system,
5-round non-detachable magazine fed, loaded individually.