The Trijicon RMR is a Red Dot Sight typically utilized on small caliber weapons due to the recoil of heavier caliber pistols as well as the optic's small size and simple design.
— Battlelog description
Only available in multiplayer, the Mini (RDS) is a sidearm exclusive red dot sight featured in Battlefield 4. It is the second optic unlocked for sidearms after the Ghost Ring Sight, requiring 50 kills to obtain, and is one of two red dot sights available to sidearms, the other being the Delta (RDS).
Compared to the Delta, the Mini uses a single red dot as a crosshair, like the Reflex and Coyote sights, whereas the Delta uses a red triangle. The Mini's frame is also much larger and thicker than the Delta's, which can aid in focusing on the target, but can potentially obscure a target as well. Besides these differences, the two sights are identical in function and zoom, leaving the choice between the two up to personal preference.
The Mini (RDS) is an attachment exclusive to sidearms featured in Battlefield Hardline.
another type of the Mini (RDS) appears as an accessory called the Canted RDS
- The Mini's model shares the same appearance as the Trijicon RMR seen in Medal of Honor: Warfighter, another game worked on by DICE.