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Streamlight

Streamlight 88066 ProTac Rail Mount HL-X 1000-Lumen Multi-Fuel Weapon Light with CR123A Batteries, Remote Switch, Tail Switch and Clips, Black

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Style: Protac Rail Mount HL-X, 1,000 Lumens


Size: 1 Pack


Features

  • 1000 Lumen weapon rail mount flashlight
  • White LED technology, impervious to shock with a 50,000 Hour lifetime; TIR optic produces a concentrated beam with optimum peripheral illumination
  • TEN-TAP Programming: Choice of three operating modes: 1.) high/strobe; 2.) high only; 3.) low/high
  • Remote pressure switch features momentary and constant on operation
  • Integrated rail clamp attaches to MIL-STD-1913 rails,easy to attach, secure mounting

Description

Streamlight 8866 ProTac Rail Mount HL-X Dual Fuel Long Gun Light Lightweight, compact, low profile, and high Lumen. The Streamlight 8866 ProTac Rail Mount HL-X is a 1,000-Lumen weapon-mounted light featuring a rail clamp designed to rapidly and securely attach/detach from rifles, carbines, and submachine guns with a MIL Standard 1913 Rail. It uses either a remote switch with momentary/constant on operation or a standard push-button tail switch, and can run on either two CR123A lithium batteries or one Streamlight rechargeable SL-B26 battery. Product Dimensions: 5. 43-Inch length; 1. 45-Inch width; 1.72-Inch height. Product Weight: 6 4-Ounces with CR123A batteries (included); 6. 9-Ounces with optional 1865 Li Ion rechargeable battery (sold separately). TEN-TAP ProGramming with Three User Selectable ProGrams: Tail Switch & Remote Switch: Standard push button tail switch and remote switch with momentary/constant on operation. Dual Fuel Technology: High for maximum illumination: 1000 Lumen; 50000-Candela; 447-Meter beam; runs 1. 25-Hours (CR123A batteries) or 1.75-Hours (SL-B26 battery). Low for extended run time: 60-Lumen; 3100-Candela; 111-Meter beam; runs 21-Hours (CR123A batteries) or 24-Hours (SL-B26 battery). Strobe for signaling or disorienting: runs 2.5-Hours (CR123A batteries) or 3.5-Hours (SL-B26 battery). Additional Features: Light Source: LED technology, impervious to shock with a 50000-Hour lifetime. Solid state power regulation provides maximum light output throughout battery life; reflector produces a concentrated beam with optimum peripheral illumination. Built to Last: Durable, 6000 Series machined aircraft aluminum construction with impact-resistant tempered glass lens. IP67-rated with standard push-button switch installed (waterproof to 1 meter for 30 minutes); IP54-rated with remote pressure switch installed (water-resistant). Mounting: Fixed rail grabber with thumbscrew easily attaches to Picatinny rails (no tools required). One handed snap-on & tighten interface keeps hands away from muzzle when attaching/detaching. Why Heroes Trust Streamlight: It all comes down to performance. Period. People who depend on their flashlights, often for their lives, need to be able to count on that flashlight to work. Every time, when it’s freezing cold, scorching hot, desert dry, or rainforest humid. They need to know that their flashlight will deliver the light they need for the task at hand. Whether it’s lighting up a whole room, throwing a beam way down a path or up to the sky, or reading a map without being seen. The Streamlight 8866 ProTac Rail Mount HL-X is a 1,000-Lumen weapon-mounted light featuring a rail clamp designed to rapidly and securely attach/detach from rifles, carbines, and submachine guns with a MIL Standard 1913 Rail. It uses either a remote switch with momentary/constant on operation or a standard push-button tail switch, and can run on either two CR123A lithium batteries or one Streamlight rechargeable SL-B26 battery.

Special Feature: High Power, Impact Resistant


Color: Black


Power Source: Battery Powered


Light Source Type: LED


Material: Aluminum


Additional Features: High Power, Impact Resistant


Power Source: Battery Powered


Light Source Type: LED


White Brightness: 1000 Lumens


Voltage: 3 Volts


Light Path Distance: 447 Meters


Battery Type: Lithium


Number of Batteries: 2 CR123A batteries required. (included)


Water Resistance Level: Waterproof


Light Source Special Features: Concentrated Beam, Impact Resistant, High Power


Battery Description: Lithium


Runtime: 1 hour


Number of Light Sources: 1


Batteries are Included: Yes


Mounting Type: Rifle Mount


Item Dimensions D x W x H: 5.43"D x 1.45"W x 1.72"H


Item Weight: 6.4 ounces


Item Dimensions L x W x H: 5.43"L x 1.45"W x 1.72"H


Warranty Type: Lifetime


Specification Met: ANSI, CE, IP54, IPX7


Included Components: Battery, Remote Retaining Clips & Mounting Hardware, User Guide


Model Number: 88066


Brand Name: Streamlight


Recommended Uses For Product: Camping, DIY, Home Defense, Industrial, Safety & Security


Global Trade Identification Number: 65


Manufacturer: Streamlight


UPC: 080926880665


Item Type Name: Professional Tactical Flashlight with Remote Switch, Remote Retaining Clips, Mounting Hardware


Unit Count: 1.0 Count


Manufacturer Warranty Description: Limited lifetime warranty.


Color: Black


Shape: Round


Style Name: Protac Rail Mount HL-X, 1,000 Lumens


Finish Types: Black


Material Type: Aluminum


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Apr 19

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.

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Top Amazon Reviews

🚀 Abunda's Overview

This is our summary and key points to consider based on customer reviews.

The Streamlight ProTac 2AAA and ProTac 1L flashlights receive outstanding reviews from customers who have used them for extended periods. One customer had the ProTac 2AAA for 5 years and praised its slim size, durability, battery life, and brightness levels. Another customer, a police officer, praised the ProTac 1L's small size, light output, rugged and waterproof design, and good battery life.

Pros

  • 🔦 Extremely durable and reliable.
  • 🔋 Excellent battery life.
  • 🔍 Two or more brightness level.
  • 🎒 Compact size that can fit in a pocket.
  • đź’ˇ Adequate light output.
  • 🌧️ Rugged and waterproof design.

Cons

  • 🔆 May not be as bright as some other models.
  • 🔄 Rechargeable batteries not included.

Should I Buy It?

If you're looking for a small, durable, and reliable flashlight with excellent battery life and satisfactory brightness, the Streamlight ProTac 2AAA and ProTac 1L are highly recommended. Despite minor downsides, both models offer outstanding value for their price.

    • Outstanding light! Consider the 88071 model HL-X instead
Style: Protac Rail Mount HL-X, 1,000 Lumens
This is my second Streamlight HL-X. The first one I purchased is the 88071, this is an 88066. I recommend going with the 88071 because it includes the Streamlight 18650 rechargeable battery - this model ships with two Streamlight CR123s. This was my fault, so I have not deducted any overall stars. The light itself has great output and is well constructed. Out of the box, you get the light, two batteries, a clicky tailcap, and a tape switch tailcap. It also comes with a piece of adhesive for the tailcap, two zip ties, and two rubber feet for attaching the tape switch to 1913 rails. My recommendation is to upgrade to a Cloud Defensive LCSMK2J tape switch mount, since the zip ties can get a bit unruly and the Cloud Defensive mount has better cable management. That being said, if you are just trying to get your firearm up and running, it is great that Streamlight includes a mounting solution. The tape switch itself is somewhat mushy but can be activated across the whole length of the switch, unlike some other options I have tried where you need to press directly in the middle. The constant activation button has a helpful shield around it to prevent unintentional activations, and I tend to mount my tape switches so that this button faces away from me. The Streamlight HL-X ships with a 1913 thumb screw mount installed in the box. This is an okay mount, but it is a bit on the bulky side. The HL-X is compatible with most Surefire Scout footprint mounts, so I replaced the included 1913 mount with a Magpul M-LOK offset Scout polymer mount and hardware from Arisaka defense. If you don't want to pay for the $3 in hardware, you can attach the 1913 thumb screw mount to the Magpul offset adapter as well since it has a slot for the cross bar. The main downside to the HL-X's mounting system is the screw body placement. Most Surefire Scout lights and other lights that use the same two hole mounting pattern bias the mounting holes to the rear of the light to move the light forward on the gun compared to the mount. Surefire does not do this - the holes are smack dab in the middle of the light body. Combine this with the already bulky nature of the Streamlight HL-X and you may have some packaging issues when trying to set up a weapon with limited rail space. I may eventually transition to a Haley Strategic Thorntail SBR mount to remedy this since it pushes the light even farther forward. I would simply go with a longer Arisaka in-line mount and put it on the 1:30 section of 1913 rail, but the screw hole location prevents you from using the Arisaka in-lines without modifying a hex key to tighten the hardware. Overall, for the price, I feel that this light, despite the bulk and mounting issues, is a solid contender for a carbine or shotgun. With some upgrades to accessories like a light mount and a tape switch mount I think the Streamlight HL-X will serve you well. ... show more
Reviewed in the United States on August 11, 2022 by Eduardo Torres
    • Very Good Light
Style: Protac Rail Mount HL-X, 1,000 Lumens
This is a very good light and that isn't considering the low price. It's just good in general. The price makes it even better. The light itself appears to be built well. Light is a bit of a cooler tone but almost neutral. Hotspot in the center of the light is BRIGHT. Can illuminate things well at quite a distance. Beam itself isn't perfect but will not matter or even be noticed by virtually anybody buying it. The pressure switch works. It mounts fine. Everything works. Now I love paying for quality but I just cannot fathom how someone will spend $400+ on an arguably worse flashlight and a better pressure switch from a competitor. This is as good or better in ways for almost 1/3 the price. People say "oh the military uses that brand!" Great. Most police and fire departments use Streamlight and like them. Some say "oh the other brand is made in America!" Yeah they're an american company. They manufacture some things in the U.S. but look on the box or the light itself. You will not see "Made in U.S.A." on it, because there are parts of the light not made in America. Streamlight is also an American company. So you can spend 1/3 the money on this better flashlight trusted by our first responders or you can buy a 3x as expensive light that actually illuminates things worse and isn't even technically made in America. Either way you're supporting an American company. I'd highly recommend buying Streamlight. ... show more
Reviewed in the United States on October 9, 2020 by Ken
    • Would buy again
Style: Protac Rail Mount HL-X, 1,000 Lumens
Amazing light. It mounts very easily to my rail and the attachment to turn it on/off/strobe also amounts very easily to the top of my rail so I can control it with my thumb. Strong light, great battery life. Not sure how size compared to others, but I am OK with the size of this as it isn’t too big in my opinion. buttons are also extremely smooth and low profile. ... show more
Reviewed in the United States on January 21, 2026 by Colin Weber
    • 88066 Pro Tac Rail Mount Light
Style: Protac Rail Mount HL-X, 1,000 Lumens
I trust Streamlight as I have a TLR-7 and the build quality, fit and finish really impressed me for the price, and the brightness was very good (it’s bright enough that looking directly into it will nearly blind you temporarily). It also was great in how it attached, ease of use etc. I liked everything about it, so I went with Streamlight for this purchase as well. I have no complaints so far, it seems like a solid light and basically exactly what I expected (I haven’t used the switch, as I feel I can thumb the button just as easily with it on the left side, and won’t accidentally hit it). The brightness is just as strong as I expected as well. In regard to a review talking about getting a fake one, I did not (mid 2022). The build quality is just as I’d expect, it’s robust and the finish is very nice. It’s very easy to attach to a pic rail (if you have an MLOK guard you just need a little pic rail, they’re cheap), and it has a hand-tightening nut attaching it. The nut has a slot cut into it as well so you can use a tool (a knife, whatever fits) if you ever needed to loosen it if it seizes up a bit. The only thing that surprised me a bit was the size. It’s a little bigger than I expected and hoped for, but that’s why you should research before buying anything lol. It’s fine honestly, just a little larger than I realized. I would’ve preferred a slightly smaller/lighter light, but the fact that it’s big enough to be used by hand is probably a benefit anyway. I suppose it’s a normal size for a light of this nature, I have never owned one so it’s new for me. It looks a little big on the there in terms of aesthetics, that’s all. If anything goes wrong with it I’ll update. But as of now I recommend it and I definitely recommend Streamlight. I like their products. ... show more
Reviewed in the United States on July 28, 2022 by Frank
    • Best light on a budget
Style: Protac Rail Mount HL-X, 1,000 Lumens
Best rifle light in this price range !!!
Reviewed in the United States on March 9, 2026 by Matthew

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