Red dot sights have become very popular on rifles ... The holo sight uses a laser projected onto the glass to illuminate this reticle. Since the reticle is a hologram, it can be in any shape.

ROMEO5 GUN SIGHT - The ROMEO5 1X20mm Red Dot Sight mounts on any platform, and even though it's small, it's tough; The solid, lightweight aluminum design gives peak performance & years of service ...

40mm REFLEX SIGHT: Pinty's 2 MOA tactical scope offers a red dot with variable reticle & brightness settings and superior light transmittance of its high-contrast amber lens PINPOINT ACCURACY ...

Among light machine guns in Delta Force, the PKM is an earlier option that becomes available at level 20. With a fire rate of 669 rpm, it’s one of the more versatile options in the game, as opposed to ...