Relatively small and concealable caliber with enough terminal performance to get the job done with proper shot placement
you get what you pay for.
Depends on who made it.
100-435 USD
Using a 40 cal pepperball in a 50 cal paintball gun is not recommended as it can cause damage to the gun and affect its accuracy. It's important to always match the caliber of the ammunition with the gun to ensure safe and effective shooting.
Maximum range of a .40 cal pistol is about 960 meters. ACCURATE range is about 50 meters.
About 30-40 USD
40-150
Gun shows, gun shops, want ads, e-gunparts.com
They will "fit" but they will not fire correctly, and will break when the bolt tries to push two of them at once.
depends on what you like the mp40 is a all metal usually skeleton stocked 40 caliber hand gun round sub machine gun from WWII
100-500 usd
both good