0.50 caliber sounds more like the canopy. Minor correction, from Wikipedia, with references: The armor has been tested to withstand strikes from 23 mm cannon f

0.50 caliber sounds more like the canopy. Minor correction, from Wikipedia, with references: The armor has been tested to withstand strikes from 23 mm cannon fire and some strikes from 57 mm rounds. References: Donald and March 2004, p. 18 Jenkins 1998, pp. 47, 49 Note "strikes", not shrapnel. The armor thickness varies. From some angles, the cockpit can take a 57mm shell. From other angles, it's only good for 23mm.