RovyVon GL3 Weapon Flashlight Review

RovyVon GL3 Weapon Flashlight Review

The RovyVon GL3 is a dedicated weapon flashlight running on one (standard) 16340 cell. It has just one mode with the Cree XP-L HI emitter.

Official Specs and Features

Here’s a link to the RovyVon GL3 weapon flashlight product page.


There’s only one RovyVon GL3 weapon flashlight, but also available is a GL3 Pro.  The GL3 Pro offers a green laser and a couple of output levels on the Cree XP-L HI emitter.


On the RovyVon website, the GL3 sells for $69.95.  It’s a new light; I wouldn’t expect to find it for less anywhere.

RovyVon added a 25% discount on amazon for this review!  Here’s a referral link to the RovyVon GL3 Weapon flashlight.

Short Review

This is quite an interesting design I believe, and one I haven’t seen before.  It seems like it’d be reliable and does not seem to lose contact when being banged around.  Output is good, but there’s only one mode (on the GL3).  I like the beam profile too, and it seems like it’d be good for tactical purposes.

Long Review

The Big Table

RovyVon GL3 Weapon flashlight
Emitter: Cree XP-L HI (Cool White)
Price in USD at publication time: $69.95
25% off on amazon!
Cell: 1×16340
Cooled Runtime Graph Uncooled Runtime Graph
LVP? Yes
Switch Type: Paddle
On-Board Charging? Yes
Charge Port Type: USB-C
Charge Graph
Power off Charge Port “with cell: yes
without cell: no”
Claimed Lumens (lm) 700
Measured Lumens (at 30s) 595 (85% of claim)^
Candela per Lumen 13.1
Claimed Throw (m) 110
Candela (Calculated) in cd (at 30s) 596lux @ 3.483m = 7230cd
Throw (Calculated) (m) 170.1 (154.6% of claim)^
Item provided for review by: RovyVon
All my RovyVon reviews!

^ Measurement disclaimer:  I am an amateur flashlight reviewer.  I don’t have $10,000 or even $1,000 worth of testing equipment.  I test output and such in PVC tubes!!  Please consider claims within 10% of what I measure to be perfectly reasonable (accurate, even).

What’s Included

RovyVon GL3 weapon flashlight what's included

  • RovyVon GL3 Weapon flashlight
  • Rovyvon 650mAh 16340
  • Charge cable (USB to USB-C)
  • Spare spring for rail mount tension
  • Glock/1913 rail adapter
  • Hex driver
  • Screws for rail adapter (2 sets)
  • Manual etc

Package and Manual

RovyVon GL3 weapon flashlight box

The product page says “The GL3 is the basic model of the GL3 Pro, it only has the lighting function with 3 modes – Momentary-on, Constant-on of High and Low mode.”  This is a bit unclear but I’m nearly certain (based on the manual below and my use of the GL3) that the GL3 has only one mode, and the wording on this product page is actually talking about the GL3 Pro (which it sort of says, but not exactly).

So don’t be confused:  the GL3 has only one mode.  It’s the GL3 Pro that has two modes and a laser.

Build Quality and Disassembly

RovyVon GL3 weapon flashlight feature photo

RovyVon GL3 weapon flashlight back view

I don’t think it’s really intended that you’d ever disassemble this light.  The head is removable but the threads aren’t lubed.  With the built-in charging, it seems like the idea is to just leave the cell in at all times.

RovyVon GL3 weapon flashlight head off

Because of reasons you’ll see later, there are all sorts of interesting contact points inside the GL3.

RovyVon GL3 weapon flashlight contact details-

RovyVon GL3 weapon flashlight internals removed

The head parts (seen above second from left) do unscrew easily from the head itself.  Once removed, the reflector didn’t come off the pill.  I am sure it could be coaxed, but I’m not sure how much effort it’d take.

Size and Comps

Size: 74.3mm/2.93″ (Length) x 35.8mm/1.41″ (Height) x 26mm/1.02″ (Light head diameter)
Weight: 95g/3.35oz

If the flashlight will headstand, I’ll show it here (usually the third photo).  If the flashlight will tailstand, I’ll show that here, too (usually the fourth photo).

RovyVon GL3 weapon flashlight in-hand

Here’s the test light with the venerable Convoy S2+.  Mine’s a custom “baked” edition Nichia 219b triple.  A very nice 18650 light.

And here’s the light beside my custom engraved TorchLAB BOSS 35, an 18350 light.  I reviewed the aluminum version of that light in both 35 and 70 formats.

RovyVon GL3 weapon flashlight beside torchlab boss 35

Retention and Carry

This is a weapon-mounted light (WML).  That’s all it is – you wouldn’t want to carry this one in your pocket or some other way.  This is a dedicated weapon flashlight.

With this kit is included the following mount items.  First is the built-in rail grabber.  The GL3 body has a groove into which fits either a GL or 1913 rail adapter.  You’ll need one set (2) of those screws seen below, and one set is spare.  That spring is spare, too.

RovyVon GL3 weapon flashlight retaining parts

I threw on the 1913 rail adapter, because I’m putting this on Picatinny rails.

RovyVon GL3 weapon flashlight 1913 attachment

The design here is a “no tools” design, and it works pretty well.  I’ll cover why I say “pretty well” in a bit.

The actual tool-less-ness of it works quite well, actually.  This little lever flips out after being pushed toward the back of the light.  I don’t think it’ll loosen due to recoil.

RovyVon GL3 weapon flashlight

The mobile side of the rail adapter is keyed, so it fits only one way.

RovyVon GL3 weapon flashlight rail attachment

I threw this GL3 on my weapon, despite it not being intended for long guns.  This is decidedly a pistol light.  But here it is mounted on some rails.  The mount was very secure!

RovyVon GL3 weapon flashlight mounted on long weapon RovyVon GL3 weapon flashlight mounted on long weapon

With the two switches being on the sides, it’s very inconvenient on a long gun like this.  On a pistol, those switches would be in the perfect location of course.

Here’s why I say the toolless attachment works only “so” well.  When the lever is open, and the screw is loosened, it’s hard to get this mobile rail to go straight out from the body.  It tends to angle as seen below.  Therefore, you may have to completely remove this side piece, put the parts on your weapon, and then tighten it all down.  It’s easy to remove though, regardless of this.

RovyVon GL3 weapon flashlight leveraging rail mount

Power and Runtime

The RovyVon GL3 weapon flashlight runs on a single 16340 cell.  An appropriate cell is included – a 650mAh 16340.  This is a standard button top cell, too.

RovyVon GL3 weapon flashlight included 16340

This cell isn’t used “directly” in the light though.  The cell slips into this plastic sleeve, which has two contact points on both ends.  These are individually springy, too.

RovyVon GL3 weapon flashlight included 16340

RovyVon GL3 weapon flashlight included 16340 RovyVon GL3 weapon flashlight included 16340

The 16340 just slips right into this sleeve.  Again this is a standard button top 16340.

RovyVon GL3 weapon flashlight included 16340

The sleeve is keyed and will fit into the flashlight body in only and exactly one way.  It’s also labeled with a plus/minus to let a user know which way to orient the cell.

RovyVon GL3 weapon flashlight internal spring RovyVon GL3 weapon flashlight cell being installed RovyVon GL3 weapon flashlight cell installed

Here are a couple of runtimes.  There’s just one mode, but I tested the normal way (cooled) and also uncooled.


As stated above when talking about swapping the cell, there’s built-in charging on the GL3.  This is by way of a USB-C port on the underside of the light.  This is notable because it means you can charge the GL3 while it’s still mounted to your weapon.

An appropriate charging cable is included.  It’s USB to USB-C.

Modes and Currents


Mode Mode Claimed Output (lm) Claimed Runtime Measured Lumens Tailcap Amps
On 700 3m+1h 3.65

Pulse Width Modulation

The one mode does not have any signs of PWM.

RovyVon GL3 weapon flashlight

For reference, here’s a baseline shot, with all the room lights off and almost nothing hitting the sensor.  Also, here’s the light with the worst PWM I could find.  I’m adding multiple timescales, so it’ll be easier to compare to the test light.  Unfortunately, the PWM on this light is so bad that it doesn’t even work with my normal scale, with is 50 microseconds (50us).  10ms5ms2ms1ms0.5ms0.2ms.  In a display faster than 0.2ms or so, the on/off cycle is more than one screen, so it’d just (very incorrectly) look like a flat line.  I wrote more about this Ultrafire WF-602C flashlight and explained a little about PWM too.

User Interface and Operation

There are technically two switches on the RovyVon GL3 weapon flashlight, but they are exactly alike. This is for ambidextrous use while weapon-mounted.  They’re labeled with an “R” and “L,” a detail I’m not at all sure is necessary.  If you manage to install the Gl3 in such a way on your weapon that you need guidance on which finger should push the switch, then it’s possible you should not be using a weapon….

In my weapon setup, the switch was not ideal – again this is not a WML intended for long guns.  On a pistol, I think the switch placement and actuation would be just about right.  These aren’t paddle switches exactly.  You sort of push straight down on the back (rearmost, nearest the trigger), and when this “paddle” nears the end of travel, it presses an e-switch.  It’s a fine actuation, and also quiet.  The switches work in the same way.

Here’s a UI table!

State Action Result
Off Click On (steady)
Off Hold On (momentary)
On Click Off

The user interface is very simple, and there does not seem to be a strobe.

LED and Beam

RovyVon uses a Cree XP-L HI emitter in the GL3.  I don’t see the CCT stated, but it’s definitely a cool white.  This should come as no surprise since this is a tactical flashlight.

RovyVon GL3 weapon flashlight

The GL3 uses a reflector.  It’s a smooth and not too deep reflector.

RovyVon GL3 weapon flashlight RovyVon GL3 weapon flashlight

LED Color Report (CRI and CCT)

RovyVon GL3 weapon flashlight


These beamshots are always with the following settings:  f8, ISO100, 0.3s shutter, and manual 5000K exposure.

RovyVon GL3 weapon flashlight

Tint vs BLF-348 ( 219b version) (affiliate link)

I keep the test flashlight on the left, and the BLF-348 reference flashlight on the right.

RovyVon GL3 weapon flashlight

I compare everything to the 219b BLF-348 because it’s inexpensive and has the best tint!


What I like

  • Good beam profile
  • Very simple user interface
  • The use of a standard 16340 cell
  • Works with a CR123 cell
  • Robust package includes various mounting options
  • No tools required installation
  • Charging can be accessed while the flashlight is mounted

What I don’t like

  • Cool white (6800K)
  • Just one mode
  • No Strobe


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