Streamlight ProTac Rail Mount 1 Weapon Light with Tapeswitch - 350 Lumens

Manufactured by Streamlight Inc.
SKU: 88058
MPN: 88058
Manufactured by Streamlight Inc.
7 Reviews
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The Streamlight ProTac Rail Mount 1 is a compact and powerful tactical light dedicated for long guns. Mounting to M1913 Picatinny rails with the integrated mount, the ProTac RM1 can be used with either a standard push button tail cap or an included remote switch giving the shooter out of the box flexibility. As an added bonus, it is a duel-fuel light, capable of running on Lithium or easy-to-find alkaline batteries (though at reduced output.).

  • Bright 12,000 candela beam reaches out to almost 240 yards
  • Includes a multi-function tail cap and remote pressure switch
  • Strobe feature (that can be disabled)
  • Duel fuel system can be powered by (1) CR123A Lithium battery or (1) AA battery (lithium or alkaline) at reduced output
  • IPX7 water proof to 1 meter for thirty minutes and impact tested to 2 meters with standard button switch
  • IPX4 water resistant with remote pressure switch
  • Durable aluminum body with anodized finish
  • Compact size at just 4.25" and 4.30 - 4.50 oz
  • Limited lifetime warranty through Streamlight

Modes: (CR123A Lithium)
  • White LED
  • High - 12,000 candela - 350 lumens - 1.75 hours runtime
  • Low - 1,380 candela - 40 lumens - 14.5 hours runtime
  • Strobe - 12,000 candela - 350 lumens - 1.75 hours runtime

Modes: (AA Alkaline/Lithium)
  • White LED
  • High - 4,950 candela - 150 lumens - 4.5 hours runtime
  • Low - 1,380 candela - 40 lumens - 14 hours runtime
  • Strobe - 4,950 candela - 150 lumens - 4.5 hours runtime

  • High / Strobe (Factory Default)
  • High only
  • Low / High  (Strobe disabled)

See More


Battery TypeCR123A 3V Lithium or AA 1.5V
FinishHardcoat Anodized
Manufacturer.Streamlight Inc.
ModesConstant, Momentary, Strobe
Output350 Lumens, 40 Lumens
PlatformM1913 Picatinny
Weight4.3 Oz

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see

Ratings & Reviews

7 reviews

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I have wanted a weapon light for a long time but have always hated every tape switch besides the Surefire SR07 since it clips to a 1913 rail. Surefire was just a little too rich for my blood. I haven't abused it so I can't say how well it will take a beating but so far I love this thing. And Primary Arms is ridiculously fast shipping as always.

Perfect rifle light


I've used this light for the past 8 months or so. The beam is very well focused so the 350 lumens (when used with the CR123A) is highly functional at long and short distances. The dual function tape switch is an added bonus. The ability to use AA batteries is a plus. The IXP7 waterproofing (when using the push button tailcap) is good for inclement weather.

Fantastic Light

by -

Fantastic light. I use this to patrol the farm and love the dual fuel feature. Unlimited power using rechargeable AAs and solar. Very lightweight and easy to mount. Extremely durable build.

Exactly as expected

by -

Very nice and compact light. I was able to illuminate a target as far away as 200 yards, and the light is not excessive indoors where it is intended to be used. I paired it with a Magpul cantilever mount with no issues.
<br>The tailswitch works nicely, and the included AA and CR123A battery was a nice touch.
<br>PS&gt;Primary Arms has had very fast shipping each time I've ordered.

Exceeded my expectations!


Just got it installed on my "pistol" and it looks super clean. Imagine spending 25% of what you were gonna spend on that surefire and still getting to look cool. Also, pair it with the Arisaka Inline scout mount for your Mlok rail for optimal looking cool and functionality of a super low profile light and bam. Satisfaction reached. The fact that it comes with the switch is amazing as well. Saved hundreds of dollars with this option.

Great entry light


Absolutely amazing light for the price. Very bright and focused light. Beam throws far enough that its perfect for indoor use. 350 lumen is ideal for any home defense weapon. The tape switch is also a good addition. For prices as low as 85 dollars, you cannot lose with this light.

Useful and Durable Weapon Light

by -

I have had this Streamlight PROTAC RM1 light on my AR pistol for 6 months and 500 rounds. It works great and has not failed. The smaller size is perfect for a 10.5 inch rail. The 350 Lumens is a lower light power now with other lights higher than 1000 lumen. This 350 is more than bright enough. Great light and a reasonable price.