[Rio]

Side-mounted optics?

[dljordan]

Look closer.

[null and void]

Side-mounted optics?

Tac-ti-cool

[VanShuyten]

“Side-mounted optics?”
Ghetto Glock sights.
Birdman Weapons Systems Homeboy Sights

https://www.gadgetking.com/2011/08/31/birdman-weapons-systems-homeboy-sights/

[Disambiguator]

Those are for when your iron sights fail.

[TLI]

Looks like an Aimpoint “Patrol Rifle” Optic on short barreled AR-15s.

If some sort of cop or wanna-be “security” guard has one it is a “patrol rifle.”

If a mere peasant have one, it is a “automatic weapon of war.”

.