If you are comparing the 551, 552, 553, and 558 red/green sights, start with the rifle and the way you will carry it. Check the rail, the space available around it, how the sight is powered, and the claims you can actually verify. A model number alone will not tell you whether a sight fits your setup or holds up to your conditions.
LTW lists the 551, 552, 553, and 558 red/green sight options here. The product listing gives some specifications for each option, but it does not establish every feature a shopper might want to know. Use this guide to compare the listed details and identify the questions to settle before you order.
How this guide was prepared: This is a comparison of the current product listing, not a hands-on test. We have not independently measured the sights, verified their optical design, tested them on a firearm, or confirmed supplier stock. The product title calls them “holographic,” but the listing alone does not prove that each model uses a holographic optical system. Treat that term as the listing name until the manufacturer confirms the technology for the exact variant.
Quick comparison of the four listed options
| Option | Details in LTW's listing | What to confirm |
|---|---|---|
| 551 | Red/green reticle; automatic power-off after two hours; four LR44 batteries; 10 × 5 × 6 cm; 220 g | Mount dimensions, included hardware, brightness settings, and how auto-off works |
| 552 | 1.0× magnification; 30 × 22 mm viewing window listed as “objective”; five brightness levels; two AA batteries; 275 g; 1/2 MOA windage and elevation adjustment | Adjustment range, mount height, and actual viewing-window measurements |
| 553 | Red/green reticle; one CR123A battery; 300 g; described as shockproof and weatherproof | Documented resistance rating, recoil compatibility, and warranty terms |
| 558 | Red/green dot; black or tan; one CR123A battery; 420 g; resettable windage and elevation; a listed “5/8-inch 20 mm Weaver rail” fit | Exact rail and clamp dimensions, adjustment details, and color/variant selection |
Those are the details shown on the LTW product page at the time of this review. They are not a promise that every variant has the same mounting system, optical design, or weather rating. Read the chosen option on the product page before checkout and ask us to confirm a missing detail that matters to your purchase.
Start with rail fit
The listing says these sights mount to standard 20 mm rails, but “20 mm” is not enough by itself to guarantee a secure fit on a particular rifle. Check the rail type on your firearm, its usable length, and the space around the charging handle, controls, or existing optic. The listing uses both rail and Weaver wording, especially for the 558. If your setup depends on a particular Picatinny or Weaver interface, confirm the exact clamp before ordering.
Look at where the sight will sit when you bring the rifle to your shoulder. Can you reach the controls without shifting your grip? Does the housing interfere with another accessory? Is there room to access the battery compartment after mounting? A sight can technically attach to a rail and still be awkward for the way you use the firearm.
Mount height also affects whether the viewing window lines up comfortably with your eye. We do not have a verified height from the rail to the center of the viewing window for every listed model. If that measurement matters because you use a fixed stock, cheek riser, backup sights, or other equipment, request it for the exact option. Do not assume the four housings sit at the same height.
Understand red and green illumination
All four options are listed with red and green reticle settings. A color choice can help you see the aiming point against different backgrounds, but neither color is automatically better in every place. Brightness, the background, your eyesight, and the reticle itself all affect how clearly you see it. Choose a setting you can identify without turning the reticle into a large flare that obscures what you are looking at.
The 552 listing specifies five brightness levels. The other options are described less completely. Do not assume they have the same number of settings or the same controls. If you expect to use the sight in very bright daylight or dim conditions, ask for the actual adjustment range and test the selected unit in safe conditions before depending on it in the field.
People sometimes use “red dot” and “holographic” interchangeably when shopping, but those labels refer to different optical designs. The LTW listing does not give enough technical documentation to distinguish the design of each model. We can compare what the listing shows; we cannot promise a laser hologram, parallax performance, or a particular reticle pattern from the product title.
Compare the power sources before choosing
The battery requirements are one of the clearest differences in the listing. The 551 calls for four LR44 batteries and has a stated automatic shutoff after two hours. The 552 takes two AA batteries. The 553 and 558 each list one CR123A battery. Batteries are not included according to the product description, so plan for the correct type before the sight arrives.
Think about how you will replace batteries in the places you actually use the sight. AA cells may be easier for you to find locally; LR44 and CR123A may already be part of your gear. That is a practical choice, not proof that one model has a longer run time. The listing does not provide measured battery life for the four options, so do not choose a model on an unsupported promise that it lasts all weekend or through a long hunt.
For the 551, verify what “automatic power-off after two hours” means. Does the timer restart when you press a control, or does the sight shut down after a fixed period regardless of use? The product listing does not explain. If that behavior could affect your use, get an answer before selecting the option.
Weight and size matter on a carried rifle
The listed weights are 220 g for the 551, 275 g for the 552, 300 g for the 553, and 420 g for the 558. That makes the 551 the lightest of these listings and the 558 the heaviest. The difference may matter if your rifle is already front-heavy or you carry it for long periods, but weight alone cannot tell you how a particular setup will balance.
Only the 551 listing gives an overall size of 10 × 5 × 6 cm. The 552 has a 30 × 22 mm dimension described as its objective, which should not be treated as its outside dimensions. We do not have comparable overall measurements for all four options. If space is tight around your rail or case, ask for a length, width, and height for the exact variant instead of judging from a product image.
Think about transport, too. A sight that clears your hands and controls while mounted may press against the inside of a soft rifle case. Check the rifle's total height with the sight attached, then compare it with the usable interior space in your case. Our double rifle case sizing guide explains why an outside case label is not an inside clearance measurement.
What weather and recoil claims mean here
The 553 is described in the listing as shockproof and weatherproof. Those words do not give a test standard, water-ingress rating, temperature range, or recoil limit. The listing does not establish that it is waterproof for immersion, that it will not fog, or that every firearm is compatible. If you need a sight for heavy rain, repeated recoil on a particular platform, or a remote trip where failure would end the day, ask for manufacturer documentation covering those conditions.
Do not extend the 553 claim to the 551, 552, or 558. We have not found a common weather rating for all four in the current product record. Wipe and dry equipment as the maker instructs, and check that the sight still functions and remains securely mounted after travel or wet use. If the housing or controls are damaged, stop relying on it until it is inspected or replaced.
How to choose among the listed options
Consider the 551 if the lowest listed weight and the two-hour auto-off feature matter to you. Confirm the four-LR44 power setup and mount details. Do not buy it on the assumption that it has a specific magnifier compatibility, battery life, or recoil rating; the LTW listing does not establish those details.
Consider the 552 if you want the option whose listing specifies 1.0× magnification, five brightness levels, two AA batteries, and 1/2 MOA adjustment. Ask whether its listed 30 × 22 mm dimension describes the usable viewing window and check that its controls and mount suit your rifle. A larger number on a listing does not by itself prove a wider field of view.
Consider the 553 if its stated weatherproof and shockproof descriptions are relevant to your use, provided you can obtain the actual manufacturer ratings you need. It uses a CR123A battery and has a listed weight of 300 g. Avoid turning the general descriptions into a guarantee for river crossings, immersion, or a particular recoil level.
Consider the 558 if you need the listed black or tan color options and resettable windage and elevation controls, and you are comfortable with the listed 420 g weight. Check the wording around its rail fit closely. The current record does not support a claim of extended battery life or superior all-weather performance.
If the missing specification is essential to your decision, hold the order until it is confirmed. That is more useful than choosing a number because a chart calls it the “best” model.
Questions to settle before checkout
- Which exact option and color will be sent, and does the product page show that selection in the cart?
- What is the mount interface and clamp size for that option? Is mounting hardware included?
- What battery type does the option take? Batteries are listed as not included.
- What are its outside dimensions and height above the rail?
- What reticle pattern and brightness settings does the exact option provide?
- Is there a documented weather rating, recoil rating, or warranty that covers your intended use?
- What are the adjustment increments and adjustment range? The listing specifies 1/2 MOA increments for the 552, but not a complete range.
Save the product page or written answers for the specific option you order. If a specification cannot be confirmed, treat it as unknown. Do not substitute specifications from a similar-looking sight sold elsewhere; housings and electronics may vary.
After the sight arrives
Before mounting anything, compare the received model and battery compartment with the order. Inspect the housing, controls, clamp, lens or window, and included parts. Follow the manufacturer's instructions for battery installation and mounting. Handle every firearm as if it is loaded; verify it is unloaded before installing or checking accessories, and follow the firearm maker's safety instructions.
With the firearm in a safe condition and a suitable range available, confirm that the mount stays secure and that the sight can be adjusted and zeroed according to its instructions. Do not assume a factory setting is correct for your firearm. Keep the instructions and record the settings that work for your equipment. If an option arrives with a different mount or controls than advertised, resolve that mismatch before relying on it.
Frequently asked questions
Are all four options truly holographic?
The listing calls the series holographic, but we do not have documentation proving the optical technology for every option. Ask for a manufacturer model number and technical documentation if that distinction matters to you.
Will one fit my rifle?
The listing says 20 mm rail compatibility, but actual fit depends on the rail interface, available space, mount height, and the exact clamp. Check those details for your firearm and selected option.
Which one lasts longest on a battery?
We cannot rank them by run time from the current listing. It supplies battery types and a two-hour auto-off claim for the 551, but no comparable measured battery-life figures.
Can I use one in rain?
The 553 has a weatherproof description, but no documented rating in this listing. Do not assume submersion resistance or extend that description to the other options. Confirm the maker's limits for the variant you want.
Does the 552 have the widest field of view?
Its listed 30 × 22 mm dimension is not a measured field-of-view specification. Compare verified viewing-window and field-of-view information before making that choice.
Next step
Match your rifle's rail and available space to the exact option, then check the battery, weight, and any weather or recoil requirements you have. See the four red/green sight options at LTW. If an important specification is missing, ask us to confirm it before you order. You can also browse other scopes and sights if these options do not fit your setup.