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Availability:
In Stock.
Arrives
Sunday, Sep 27
Features
- FAST TARGET ACQUISITION A fixed 68 MOA circle surrounding a precise 2 MOA center dot creates an easy-to-recognize sight picture, helping users locate and engage targets quickly during recreational shooting and training.
- PROTECTED WIDE VIEW The closed-emitter design positions the LED emitter inside the sight body between the front and rear lenses, reducing direct exposure to dust and debris. Its 32 x 24 mm optical window provides a spacious viewing area with less obstruction around the target.
- ADAPTS TO YOUR VIEW Switch between red and green illumination to improve contrast against different backgrounds. Ten intensity settings allow the reticle brightness to be adjusted as surrounding light conditions change.
- BUILT FOR HANDLING A solid metal protective hood surrounds the optical system for dependable everyday protection. Intentional spacing between the outer hood and optical window helps reduce direct contact with the lens during accidental bumps and handling.
- Easy Clamp-On Mounting: Fits standard 20mm Picatinny and Weaver rails with a simple side-screw clamp design. Just place it on the rail and tighten for a secure, quick setup without complicated adjustment.
Brand: OHHLION
Color: Black
Style: Red & Green Dot
Product Dimensions: 3.94"L x 1.97"W x 2.44"H
Sport: Airsoft, Benchrest Shooting, Hunting
Material: Metal
Magnification Maximum: 1 x
Objective Lens Diameter: 32
Magnification Minimum: 1 x
Compatible Devices: Airsoft Gun, Rifle
Magnification Maximum: 1 x
Objective Lens Diameter: 32
Magnification Minimum: 1 x
Compatible Devices: Airsoft Gun, Rifle
Mounting Type: Picatinny Mount
Reticle Type: 68 MOA Circle& 2 MOA dot
Item Dimensions L x W x H: 3.94"L x 1.97"W x 2.44"H
Color: Black
Product Style: Red & Green Dot
Material Type: Metal
Brand Name: OHHLION
Sport Type: Airsoft, Benchrest Shooting, Hunting
Model Name: OHHLION 551
Manufacturer: OHHLION
Number of Items: 1
Unit Count: 1 Count
Included Components: 551 holographic reflex sight, Cleaning Cloth, LR44 Battery, Manual
Item Type Name: 551 red dot sight
Model Number: 551
Manufacturer Part Number: 551
Warranty Description: Lifetime Warranty
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Sep 27
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
5/5 stars "I'm blown away by the Ohhlion holographic sight! It holds zero perfectly, even after repeated use and rough handling. The fitment is excellent, and the viewing window is crystal clear. I love how it performs in both bright outdoor conditions and low-light indoor settings - the brightness settings are spot on. The sight is incredibly reliable and accurate. One thing to note: to turn it off, you'll need to either press both arrow buttons simultaneously or hold the NV button - a bit unconventional, but easy to get used to. Also, keep in mind that it takes AA batteries, which aren't included, so be sure to pick some up. And the best part? This unit is a fraction of the price compared to the brand name units, offering incredible value for the performance you get. Highly recommend this optic to anyone looking for a top-notch holographic sight for hunting, tactical, or competitive shooting without breaking the bank. Great job, Ohhlion!"
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Reviewed in the United States on August 2, 2025 by Pink
Nice also if you want to center it put a iron sight in front of it adjust it then you can remove it
Reviewed in the United States on June 17, 2026 by Mili Gamez
Okay so I use this all the time. I love the adjustable two color vertical choices. I would give this five stars except there's a slight reticle shadow if you put the setting too bright. Otherwise it's perfect and it feels pretty indestructible. Come to the battery and the price is amazing. If you buy it I'm sure you'll use it for any close range shooting you feel like. The size and weight of a holographic is quite a nice change.
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Reviewed in the United States on August 18, 2025 by Rick V
The battery case falls out other than that i like it a lot just tape it up
Reviewed in the United States on August 13, 2026 by Kelly
Overall I give the Optic 4 stars for a budget optic but 5 stars for the price range. you can spend a little more and get a Bushnell TRS-25, Sig Sauer or something along those lines however if you're looking for a good Eotech holographic clone on a budget or just for an airsoft gun this is a good choice. For the low price of $45 it's just a good looking sight on your rifle. I haven't tested to see if it holds zero on my AR yet but if you're looking to use it on an airsoft gun it's a solid build. The optic it's self is build pretty well for the price. The only thing I don't like about it is the glass is a little dark and reflective so the view out of it isn't perfect. If it weren't for that I would say this is the best budget optic under $100. For the $50 price range though this is probably the best you're gonna get. I'm genuinely surprised.
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Reviewed in the United States on February 10, 2023 by Joe D.
Finally had a chance to take time to write a review. When the package arrived the sight was missing a battery. So had to buy batteries off amazon since no local stores near me carry it. Then after they finally arrived, the sight still didn't work. So that was a waste of money. AND BTW, the glass is tinted like the reviews have said, so if you are wondering if its bad, I can tell you, if you want glass that is clear, I suggest getting something else. What a waste of time
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Reviewed in the United States on April 26, 2023 by BJ
I mean, it's a 40-50 dollar Eotech knockoff. You're getting what you paid for. Pros - - Decent sized sight picture - Battery seems to be holding up. I've left it on for several days on accident. - fairly easy to sight in. - actually seems durable. Housing feels pretty solid. - Easy controls. Cons - - sight picture, while decently sized, is not particularly clear. It's definitely off colored and a very dark. - It's a large optic for it's class and it eats up a lot of rail space. - The deal breaker; The redical brightness is FAR too low for the outdoors. If you're shooting in low light or let's say - playing airsoft or what have you, it's fine. In doors, it's okay as long as your environment isn't super bright. As soon as you go outside, good luck picking up your redical. On the brightest setting it's barely visible. With this being said, I'd give this thing a 3 to a 3.5. Again, not horrible for the price
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Reviewed in the United States on January 5, 2024 by Devon Ashburn
Decent quality for the price
Reviewed in the United States on May 27, 2026 by Beth Leonard