Choosing a weapon-mounted light (WML) for a Glock 19 is a bit of juggle because the Glock 19 sits right between a "Compact" and a "Full-Size" frame. While almost any light fits the rail, the muzzle overhang and switch reach vary significantly between Gen 3, 4, and 5 frames.
After using them myself and with some user-reported insights, these are the top recommendations for the Glock 19.
Glock 19 Light Length Fit Guide
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| Light Model | Length | Muzzle Overhang (G19) | Best Application |
| Streamlight TLR-7 HLX | 2.58" | 0.35" Overhang | Daily Concealed Carry |
| SureFire X300T-B | 3.76" | 1.15" Overhang | Duty / Home Defense |
| Streamlight TLR-1 HL | 3.39" | 0.55" Overhang | Best Value / Stand-off |
Streamlight TLR 7 HLX - Best Overall
The TLR-7 HLX packs more lumen for the Glock 19 but it's longer than the original TLR 7X this time. The overall size is the same, but it keeps the setup fairly compact for IWB (Inside the Waistband) holsters.
- On a G19 frame, the new "High" switches are the preferred choice. They allow you to activate the light with your support-hand thumb without breaking your grip, which is a common complaint with the older side-switch models.
- The 7X now supports the SL-B9 rechargeable battery. If you are a high-volume trainer, this saves approximately $60/year in CR123A costs.
Read detailed TLR 7 HLX review here
Pros
- Improved 5,000 Candela peak intensity provides better 'hotspot' definition than the original TLR-7 model.
- Same ergonomics as TLR 7 X
- Front loading battery compartment design
- Very lightweight weapon light for CCW
- Top EDC light option
Cons
- Strobe mode activation isn't so obvious (See instruction here)
Streamlight TLR 1 HL - Best Duty Light For The Money
The TLR-1 HL is the most common light found in police holsters. It offers a middle ground in size and a massive "wall of light" for indoor clearing.
- The 0.55" overhang past the G19 muzzle serves a hidden purpose: it acts as a stand-off device. In a close-quarters struggle, if the muzzle is pressed into a soft target, the slide can be pushed out of battery, preventing the gun from firing. The TLR-1 HL prevents this by keeping the slide free.
- Use the "GL" (Glock) key included in the box. Do not use the "1913" key; while it fits, it allows for microscopic "slop" during recoil that can eventually mar your frame's rail.
Compare side by side - TLR 1 HL VS X300U
Pros
- Easy toggle switch for one handed operation
- Much more affordable
- Easy strobe activation and momentary on
- Replaceable front lens
- Easy toggle switch for one handed operation
Cons
- Not much the the price
Surefire X300 Turbo - Best Duty & Distance
If you need to identify a target at 50+ yards or punch through a "photonic barrier" (like an oncoming car's headlights), the X300 Turbo is the winner.
- For the Glock 19’s polymer rail, always buy the "B" model. The "A" model uses a plastic latch system that can develop a "wobble" on Glock frames over time. The "B" model uses a steel thumb-screw that clamps onto the rail for a permanent, zero-movement fit.
- With 66,000 Candela, this light has nearly 13x the concentrated "punch" of the TLR-7, despite having similar lumen counts.
Pros
- Same durability as X300U series
- Handles extreme weather conditions
- Long range illumination
- No dimensional differences from X300U
- Same ergonomics as X300U
Cons
- Stiff switches to toggle for gloved users
- Significant muzzle overhang (1.15") may cause carbon buildup on the lens during extended range sessions; recommend applying a lens protector or light coating of CLP before training.
Olight PL Pro 3 - Best For Training
The PL-3 is a budget-friendly alternative that solves a specific mechanical issue: the varying rail slot positions on different Glock generations (Gen 3 vs. Gen 5).
- The standout feature is the sliding rail key. While most lights give you 2 or 3 fixed keys, the PL-3 allows you to slide the light body precisely where you want it on the G19 rail. This allows you to "limit the overhang" or pull the switches closer to the trigger guard based on your finger length.
- At 1,500 lumens, it is the brightest on the list for the price. However, be aware that the 10,200 candela means the light "scatters" quickly. It’s an excellent "room-filling" light but lacks the long-range punch of the Surefire Turbo or Modlite.
See More: Olight PL 3 Reviews
Modlite PL350 - Best Versatility
The Modlite PL350 is a modular system that brings rifle-grade illumination to the Glock 19. It is designed for those who prioritize raw power and the ability to customize the light head for specific environments.
- The PL350 uses an 18350 battery, which is wider than a CR123A. On a G19, this creates a much wider profile.
- Switch Ergonomics: The rocker switches are highly responsive, but for G19 users with smaller hands, we recommend the included PHLSTER ARC switches. These extend the reach slightly, allowing you to activate the light without compromising your support-hand wrap on the grip.
- Maintenance Note: The front-loading battery design is a massive advantage; you can change your 18350 cell without removing the light from the rail, ensuring your holster fitment and mounting torque remain undisturbed.
Pros
- Much brighter light and throw than other lights for PID
- 18350 rechargeable battery - long battery life
- Front loading battery without removing the light
- Easy toggle switch for one handed operation around the trigger guard
Cons
- Mount key insert feels sloppy
- No QD mount
- Not for CCW because it sticks too far past the muzzle on Glock 19
Olight PL Turbo - Best Budget Thrower Light
Best Budget High-Candela LightThe PL Turbo is a "distance" specialist. While the PL-3 (listed below) is for room-clearing, the Turbo is designed to punch through window tints and identify targets at 500+ meters.
- The light measures 3.53 inches in total length. On a standard Glock 19, this creates a 0.93-inch muzzle overhang
- rated at 800 Lumens but a massive 66,300 Candela. This gives it a 515-meter throw, outpunching the TLR-1 HL in distance while maintaining a usable "hotspot" for PID (Positive Identification). But the lumen intensity drops after the first minute of constant on.
Pros
- Much brighter light than Surefire X300T
- Long range illumination with flood beam
- Strong battery door latch
- Aluminum body with new QD screw mount
Cons
- Candela output drops after a set time
Didn't find what you like? See more Best Pistol Weapon Lights Guide
How I Evaluated These Lights: "Selection was based on mechanical rail compatibility with the Glock 19 (Gen 3-5), holster availability from top-tier manufacturers like Safariland and Tier 1, Bravo Concealment.
No destructive 'drop testing' was performed; durability ratings are based on high-round-count user reports from the professional community."
