The Vortex Impact 4000, Maztech X4-LRF, Arken TARGETLOCK TL3000, Element Optics Seeker, Tango FIRE4000 and SIG SAUER KILO WARP 6K show how quickly weapon-mounted laser rangefinders have developed. They share the same broad idea, but their displays, controls, software and weight make them quite different products to live with.
My time with the Impact 4000 on my Sako TRG and the Maztech X4-LRF-15K across my Lithgow Woomera, Sako TRG and Tikka T1X has made me particularly conscious of the less glamorous details. A clear screen and sensible controls matter. So does a remote lead that doesn’t clash with the scope turret.
The X4-LRF family also includes the cheaper 2K, while Tango has announced the FIRE8000 alongside its FIRE4000. Both the FIRE8000 and SIG’s WARP 6K are listed as coming soon.
Weapon-Mounted Laser Rangefinders: Quick Comparison
| Model | Main Distinctions |
|---|---|
| Vortex Impact 4000 | GeoBallistics, onboard environmental sensors and a Bluetooth remote. 454g before additional mounting hardware. |
| Maztech X4-LRF-15K | Applied Ballistics, onboard sensors and a 1534nm ranging laser. Substantially more expensive than the 2K. |
| Maztech X4-LRF-2K Gen II | The lower-priced X4 model, using a 905nm ranging laser rather than the 15K’s laser system. |
| Arken TARGETLOCK TL3000 | DNT Engine, OLED display and ten onboard profiles. The 213g device weight excludes the 42g mount. |
| Element Optics Seeker | Element Ballistics, onboard weather sensors and four profiles. A separate product from the older RF Module. |
| Tango FIRE4000 | Applied Ballistics, OLED display and wired remote. No onboard environmental sensors. |
| Tango FIRE8000 | Tango’s announced additional model. Coming soon. |
| SIG SAUER KILO WARP 6K | Applied Ballistics Elite and a 1.8-inch display. SIG lists it as coming soon. |
1. Vortex Impact 4000
The Impact 4000 is the familiar reference point in this group. I used it above a Vortex Razor on my Sako TRG 22 A1 in 6.5 Creedmoor, and found its menus and controls logical. The remote was a meaningful part of that experience, rather than an accessory that stayed in the box.
Vortex combines its GeoBallistics software with temperature, pressure and humidity sensors, plus a compass. The remote is wireless, which avoids a cable between the control and the rangefinder. That is a noticeable difference from the wired arrangements on several of the other models here.
Quick Stats: Impact 4000
- Published weight: 16oz, approximately 454g
- Dimensions: 4.6 x 3.2 x 2.5 inches
- Software: GeoBallistics
- Controls: On-device buttons and Bluetooth remote
- Manufacturer range claims: 4,000 yards reflective, 2,500 yards on trees and 1,500 yards on deer
What I appreciated was the overall coherence. The screen, menu structure and remote made sense together, rather than feeling like separate products bolted into one housing. That doesn’t mean the Impact is small. Its weight and height were noticeable on the rifle, and the supporting mount adds more again.
The wireless remote also has its own battery and connection to manage. Avoiding a cable is convenient, but it doesn’t make the control maintenance-free. That is a recurring theme with these devices: convenience in one area often introduces another small responsibility elsewhere.
What stands out: The straightforward interface and wireless remote. The compromise: Size and weight. My full Vortex Impact 4000 review covers my experience with it on the TRG.
Vortex Impact 4000
Check Latest Price2. Maztech X4-LRF-15K
The Maztech X4-LRF-15K is the most involved system I have used in this comparison. I tested it on top of my Lithgow Woomera and on the side of both my Sako TRG and Tikka T1X .22. Those three rifles gave me a useful perspective on the housing, display and physical controls, beyond the headline range figure.
The large display was one of the things I liked most. The hardware impressed me, although the app and profile-management experience felt less polished than the Vortex.
Quick Stats: X4-LRF-15K
- Published weight: 367g with the supplied battery
- Dimensions: 133 x 72 x 47mm
- Software: Applied Ballistics
- Ranging laser: 1534nm
- Environmental data: Onboard sensors
- Manufacturer instrument range: Up to 15,000 metres, subject to target and conditions
One awkward detail showed up on the Woomera. With the unit above the scope, the elevation turret obstructed the remote-button cord. It wasn’t a major issue during that test because I could press the button on the device itself, but it was a genuine limitation of that particular arrangement.
On the side-mounted TRG and Tikka, I had the button on the side as well and found it easy to press. The difference between those arrangements and the Woomera was noticeable. The same device felt more straightforward on the two side-mounted setups.
What stands out: The display, substantial construction and breadth of the system. The compromise: Cost, the less-polished app experience and the cable-clearance issue I encountered.
The Cheaper Option: Maztech X4-LRF-2K Gen II
The X4-LRF-2K is the lower-priced member of the family, with the current new model named Gen II. It retains Applied Ballistics and onboard environmental and motion sensors, but uses a 905nm ranging laser and has a published 2,000-metre range specification. Maztech lists 348g with the battery and the same 133 x 72 x 47mm dimensions as the 15K.
The family resemblance is strong, but the 2K isn’t a 15K with a different label. The shared size, software and controls sit around a different ranging system. That is the meaningful distinction between the two versions.
Maztech X4-LRF-15K
Check Latest Price3. Arken TARGETLOCK TL3000
The TARGETLOCK TL3000 brings a much smaller housing to this group. Its low rectangular shape, OLED readout and rotary control give it a distinctly different appearance from the taller Vortex and Maztech units.
Arken uses the DNT Engine, not Applied Ballistics. It supports ten onboard profiles, the DNT app and Kestrel connectivity. That software distinction deserves as much attention as the physical size: these are different ecosystems, not interchangeable names for the same calculator.
Quick Stats: TARGETLOCK TL3000
- Published device weight: 213g
- Mount weight: A further 42g
- Software: DNT Engine
- Display and control: OLED and wired remote
- Manufacturer range claims: 3,000 yards reflective, 2,000 yards on tree trunks and 1,100 yards on deer
The weight needs that qualification. Comparing the bare TL3000 with another unit’s complete installed weight would exaggerate the difference. Even with its listed mount included, however, the compact housing is a clear part of Arken’s approach.
What stands out: The small format and ten-profile storage. The distinction to remember: DNT software rather than AB or GeoBallistics. There is more detail in our Arken TARGETLOCK TL3000 article.
Arken TARGETLOCK TL3000
Check Latest Price4. Element Optics Seeker
The Seeker is the Element model in this comparison. It is not the older cylindrical RF Module: it has its own rear display, a different housing and an integrated Element Ballistics Chip.
Element packages a barometer, hygrometer, thermometer, inclinometer and compass into the device. Bluetooth, a cable remote and Kestrel integration are also listed, with four stored profiles.
Quick Stats: Seeker
- Published weight: 318g with battery
- Dimensions: 118 x 72 x 50mm
- Software: Element Ballistics
- Battery: CR123
- Weather resistance: IPX6
- Manufacturer distance specification: 5 to 3,000 metres
The rear-facing display and built-in weather sensors make it a much more direct counterpart to the other rectangular units here than the RF Module. At 318g with its battery, it also sits below the Vortex’s published weight, although accessories still need to be counted separately.
What stands out: An integrated display and environmental sensors in Element’s own software ecosystem. The distinction to remember: Four profiles, and a 3,000-metre claim rather than 3,000 yards.
Element Optics Seeker
Check Latest Price5. Tango FIRE4000
Tango Innovations’ FIRE4000 is a compact Applied Ballistics unit with a rotating OLED display and a wired remote. Its layout keeps the main readout at the rear, with physical controls on top of the housing.
Its most important distinction from the Vortex, Maztech and Seeker is the absence of onboard environmental sensors. Environmental information comes from external sources or manual input.
Quick Stats: FIRE4000
- Published weight: 420g
- Dimensions: 111 x 75 x 47mm
- Software: Applied Ballistics
- Battery: CR123A
- Display: OLED
- Environmental sensors: No onboard weather sensors
Tango’s current product page describes Applied Ballistics Elite. Earlier versions and descriptions have used different AB terminology, so the software generation matters when comparing units. The badge alone doesn’t explain every feature.
What stands out: The AB-based interface and wired control. The compromise: Dependence on external environmental information. Our Tango FIRE4000 article explores the model in more detail.
Tango FIRE8000: Coming Soon
Tango lists the FIRE8000 as coming soon, alongside the FIRE4000. A complete specification set hasn’t been confirmed on its product listing, including comparable weight and sensor details. It remains an announced addition to the range, rather than a confirmed replacement for the FIRE4000.
Tango FIRE4000
Check Latest Price6. SIG SAUER KILO WARP 6K
Coming soon: That is the status on SIG SAUER’s own KILO WARP 6K page. The WARP is an important addition to the category, but a product listing should not be confused with a completed release.
The 1.8-inch daylight-readable display is its most obvious visual feature. SIG pairs that screen with Applied Ballistics Elite, onboard environmental sensors, a digital compass and an included Bluetooth remote.
Announced Specifications: KILO WARP 6K
- Model: KILO WARP 6K, SKU SOKW39C0
- Published weight: 14oz with battery, approximately 397g
- Display: 1.8-inch reflective TFT
- Software: Applied Ballistics Elite
- Manufacturer range claims: Up to 6,000 yards reflective, 2,000 yards on trees and 1,700 yards on deer
The combination puts SIG in the same broad conversation as the established rectangular units, with a larger stated display than the Impact 4000. That screen and the wireless remote distinguish its announced interface. A firm release date isn’t given on the product page.
SIG SAUER KILO WARP 6K
Check Latest PriceWhat Separates These Systems?
The Screen and Controls
The most revealing photograph is often the back of the unit. That shows the part you actually read: the display, the space around it and the location of the controls. A large diagonal measurement is only part of the story. Contrast, text size, menu organisation and the number of separate screens all contribute to the interface.
My experiences with the Vortex and Maztech illustrate the difference. I liked the Vortex’s logical menus and the Maztech’s display, while the Maztech’s remote lead caused a specific clearance problem on the Woomera. Neither observation can be reduced to the number printed in a model name.
Software Is Part of the Product
GeoBallistics, Applied Ballistics, DNT Engine and Element Ballistics are distinct software platforms. Their apps, profile management and accessory support shape the ownership experience. A familiar name doesn’t mean every implementation has the same interface, licence tier or supported connections.
There is also a distinction between an integrated sensor and a connection to another device. Tango’s external-weather approach is different from having the sensors onboard. Similarly, the presence of Bluetooth doesn’t establish compatibility with every Bluetooth accessory.
Weight Figures Need Context
A bare-device weight, a weight with battery and a complete installation are three different measurements. Arken separately lists the TL3000 and its mount; Maztech and Element specify battery-inclusive figures. Additional brackets, remotes and cables can change the total. The published numbers are useful, provided the measurement basis stays visible.
Maximum Range Is Not a Common Test
The largest range number usually describes favourable conditions or a particular target category. Reflective, tree and animal figures are not interchangeable, and neither are metres and yards. Different manufacturers also use different test conditions, so a larger number alone doesn’t establish a like-for-like advantage.
Frequently Asked Questions
What Does WMLRF Mean?
WMLRF means weapon-mounted laser rangefinder. It describes the mounting format, not a particular software platform. Several products in the category also incorporate a ballistic calculator and environmental sensors.
Are These Riflescopes?
No. These are separate rangefinding devices with their own displays. Scope-review criteria such as magnification range, eye relief and first- or second-focal-plane reticles do not describe them.
Is the Element Seeker the Same as the RF Module?
No. Element lists the Seeker and RF Module as separate products. The Seeker is the rectangular, rear-display model covered here.
Is Tango FIRE4000 Made by SIG SAUER?
No. FIRE4000 is a Tango Innovations product. SIG SAUER’s model in this comparison is the KILO WARP 6K.
Are the FIRE8000 and WARP 6K Released?
The manufacturers currently describe both as coming soon. Neither product page gives a firm release date.
Final Thoughts
The biggest change in this category is the variety. Vortex, Maztech and Tango no longer account for the whole conversation: Arken and Element have distinct designs, while SIG and the FIRE8000 add two upcoming models to watch.
My own Vortex and Maztech experience keeps bringing me back to the same practical details: a readable display, controls that make sense and the bulk of the complete system. Those are the things I remember after using them. The range specification is only one part of the story.
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