The Boeing P-26 fighter of the 1930s & '40s was nicknamed this, like a classroom weapon
[DOC] [TLE] Boeing P-26 Peashooter - Wikipedia [PAR] The Boeing P-26 "Peashooter" was the first American all-metal production fighter 
aircraft and .... and 31st PS) which flew them until they were replaced by P-40s in 
May 1941.