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Primary Arms SLx MD-21 Push Button 21mm Microdot 2 MOA Red Dot. Red dot sight with a 21mm mount and a 2 MOA aiming dot for AR-15 platforms.
Specifications
- Manufacturer:
- Primary Arms
- Category:
- Red Dot / Holographic Sight
- UPC:
- 818500018254
- MPN:
- 810027
- Required Component:
- No
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Current
$179.99
Lowest
$159.99
Highest
$179.99
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Guide
Optic Mounting Solutions: Height Over Bore Explained
An analysis of AR-15 optic mounting heights, how height-over-bore affects zero offset and holdovers, and the tradeoffs between absolute co-witness, lower-third, and taller mounts.
6 min read
Guide
Optics 101: Red Dots, LPVOs, and Magnified Scopes
A high-level overview of the main optic categories, explaining tradeoffs between speed, versatility, and precision for AR-15 builds.
7 min read