Primary Arms GLx MD-21s Push Button 21mm Red Dot Sight with AutoLive(R) - 2 MOA

LaserMax Red-Dot Sight 1x22mm 3 MOA Dot - Compact - LM-RRDS

LaserMax Red-Dot Sight 1x21mmx16.70mm 4 MOA Dot - Versatile - LM-MRDS

Swampfox Sentinel II Red Dot Sight 1x20mm 3 MOA

LaserMax Red-Dot Sight 1x20.5mmx18mm 3 MOA Dot - Reliable - LM-ERDS

OSIGHT K, 6 MOA DOT OPEN RED DOT SIGHT RMSc FOOTPRINT, BLACK

PRIMARY ARMS GLx MD-21S 2 MOA Dot Push Button Red Dot Sight w/ AutoLive (PA-GLX-MD-21S)

OSIGHT SE DPP 2 MOA DOT + 32 MOA CIRCLE RED DOT SIGHT ENCLOSED BLACK, CR1620 SIDE LOAD