This game is not only a test of my skills yet also a showcase of how realistic you can get not only bullet penetration but velocity, drop, and so much more. The following math below is how bullet penetration is calculated. 1 roblox mass unit (RMU) is equivalent to 21.952 kg 1 roblox stud is equivalent to 28cm in length* *derived from https://create.roblox.com/docs/physics/units