The best replacement for 20 mm is 50 cal.

The best alternatives to 20 mm are rated as following:
★★★★★  50 cal
★★★  50 caliber
★  .50
  .50 bmg
  canon 20 mm
  50 bmg

Your alternative for 20 mm is not listed? Suggest!


No companions for 20 mm have been suggested so far.
You have in mind a companion for 20 mm and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of 20 mm in all years. Click on graph for more.
20 mm
50 cal
50 caliber