Nelson Big Gun Agriculture Spray Head 2 in. FIPT 24 Degree Corner. The Nelson Big Gun Sprinkler is available as a Full or Part Circle sprinkler in a variety of trajectories and connections. The interchangeable Taper Ring Nozzle makes customizing the flow rate a breeze. While it may be the smallest member of the Big Gun sprinkler family, it uses the same heavy duty lower bearing and rugged construction of the larger sprinklers. It can also be paired with the QC100 for a portable, quick-coupling system.