User Ratings
No ratings yet
Be the first to review this product
Meprolight MEPRO M21 Open X Red Dot Sight with Carrying Handle. Self-illuminated reflex sight that requires no batteries. Illumination is provided by a fiber optic collector during the day and by a self-powered tritium light source at night. Features a large 30 mm window for rapid target acquisition with both eyes open. Fixed 1x magnification with five reticle options (4.3 MOA dot, 5.5 MOA triangle, bullseye, and X). Open emitter design. Mounting: compatible with carrying handle front sight AR-15 setups for absolute co-witness. Package contents include the sight with carrying handle. Color: Black. Condition: New.
Specifications
- Manufacturer:
- Meprolight
- Category:
- red-dot-holo-sight
- UPC:
- 840103145334
- MPN:
- 0626632
- Required Component:
- No
Parts Cabinet
Track parts you own or plan to buy.
Where to Buy
Have one to sell?
Sponsored
MantisX
The smart way to train your AR build
Built your rifle — now train it. BlackBeardX installs in minutes and turns your AR into a full dry fire system with smart feedback on every pull.
Shop BlackBeardXPrice History
No Price History Available
Check back later for pricing trends
Price Alert
Sign in to save a target price and receive an email when this component drops.
Sign In to Set AlertSimilar Products
Vortex Optics StrikeFire II Red Dot Sight 30mm Tube 1x 4 MOA Red and Green Dot with Lower 1/3 Co-Witness Cantilever Picatinny Ring Mount Matte Black
Vortex Optics
$149.99
SIG Sauer Romeo4T Pro Red Dot 1x .5 MOA, Black - SOR44101
Sig Sauer
$549.99
Sig Sauer Romeo MSR Red Dot Gen II Optic - SORMSR101
Sig Sauer
$109.99
Vortex Triumph 2 MOA Red Dot Sight w/ Lower 1/3 Co-Witness Mount, Low Mount, Unlimited Eye Relief, Waterproof, Night Vision Compatible
Vortex
$99.00
Trijicon RMR Type 2 3.25 MOA Red Dot Sight Cerakote Olive Drab Green RM01-C-700623
Trijicon
$455.99
Vortex Crossfire 2 MOA Green Dot Black Sight CF-GD2
Vortex
$149.00
Sig Sauer Romeo5 Gen II Compact Red Dot Sight 1x20mm 2 MOA SOR5102
Sig Sauer
$106.99
Aimpoint Patrol Rifle Optic PRO Red Dot Sight LRP Spacer 39mm
Aimpoint
$497.00
Builds Using This Part
No builds yet — be the first to use this part.
Related Guides
Guide
AK Optics Mounting Guide: Side Rail vs Dust Cover vs Handguard
Compare the main AK optics mounting approaches and choose the right setup for durability, repeatable zero, and practical shooting performance.
8 min read
Guide
Glock-Compatible Platform Overview: What Matters for Reliable Builds
A practical overview of Glock-compatible pistol builds, including compatibility checkpoints, reliability priorities, and upgrade sequencing.
7 min read
Guide
Glock-Compatible Red Dot Setup and Zeroing Basics
How to set up a red dot on Glock-compatible pistols, avoid mounting mistakes, and choose a practical zero for defensive and range use.
7 min read