the standard I chose for Budokan is the Beretta 92fs in 9x19mm partly because it was that gun in that movie with that guy who also played Batman but mainly because of A the round and B the reliability, safety, and effectiveness of the Pistol now it could be anything a Glock model 19 a Sig p365 and it could be in whatever caliber that is not the point of standardization; the meaning of that is to say this is optimal now choose based upon that milestone and personally I went with a Ruger LCP II in 9x17mm so I did not even buy 'my own gun' but then I never said I was going to either, I just said the Budokan standard is the Beretta model 92fs otherwise known as the US Army M9