Can you spot the difference between BB gun, real gun in seconds?

Austin ISD Police recently shared a photo on Twitter of a confiscated BB gun to show how realistic it can look compared to a 9mm pistol.

Too quick to judge - Imgflip

Is this an airsoft or a real gun? - Quora

Air gun - Wikipedia

Bear River Boa BB Gun, CO2 Powered Semi Auto Air Gun, BB Pistol, Guns for Adults, BB Guns, Metal Magazine, 177 Caliber Pistols, 4.5mm Ammo, 410 FPS, Safety Switch

Are police trained to notice the difference between a fake gun and a real gun? - Quora

Which One's the BB Gun? - The Armory Life

Gun or air pistol – how to spot a fake

I-Team: Differences between a fake gun and a real gun

kid in my neighborhood has been walking around outside with this, anyone able to identify if it's airsoft/real? (sorry for low quality it's from a ring camera) : r/airsoft