AR-15s function in exactly the same way as other rifles, and they are no more powerful than other rifles of the same caliber.
Yea and cuz they are exactly like other rifles is exactly why they are the PREFERRED weapon for mass shooters and for, wait for it, crazy militia people, who are waiting for the army to come get them, or a wave of millions of jews/blacks/hispanics, to rush their compound. (or to protect their white way of life).
It's also why the military uses M15 (fully auto AR15s), just cuz they are like every other rifle.
I have so had it with Gun Lovers (people haters), my message to all of you is - F you go F your gun barrel.
FYI - I grew up with guns and hunting. My dad and mom never needed an AR-15 to bag their yearly deer. They didnt have guns to protect themselves because they were chickensh#t cowards afraid of anyone who looks different coming to steal their TV.