Streamlight ProTac Rail Mount 1L-X Weapon Light (Pro & Standard)

Streamlight ProTac Rail Mount 1L-X Tactical Weapon Light

The Streamlight ProTac Rail Mount 1L-X is a compact, high-performance weapon light designed for rifles, carbines, and other firearms requiring reliable illumination in a lightweight package. Featuring multi-fuel capability, the ProTac Rail Mount 1L-X accepts either a CR123A lithium battery or Streamlight SL-B9® rechargeable lithium-ion battery pack, allowing users to choose between extended runtime or increased light output.

Powered by the SL-B9 rechargeable battery, the ProTac Rail Mount 1L-X delivers up to 850 lumens, 30,000 candela, and 346 meters of beam distance. When using a CR123A battery, the light produces 500 lumens, 18,000 candela, and 268 meters of beam distance while providing longer runtime and the convenience of disposable batteries.

Built from rugged 6000-series aircraft aluminum, the ProTac Rail Mount 1L-X features an anodized finish, IP67-rated waterproof construction, and impact resistance for duty, training, and defensive use.

Available in four configurations, users can choose between CR123A or rechargeable power options, as well as standard push-button activation or Pro models that include the Jack-Cap® tailcap and remote pressure switch.

Choose Your Configuration:

ProTac Rail Mount 1L-X — CR123A / Standard Tailcap

Item #89026

• Uses one CR123A lithium battery
• Up to 500 lumens / 18,000 candela
• Standard push-button tail switch
• Includes M-LOK® mount and hardware

ProTac Rail Mount 1L-X Pro — CR123A / Pressure Switch Included

Item #89024

• Uses one CR123A lithium battery
• Includes Jack-Cap® tailcap and remote pressure switch
• Up to 500 lumens / 18,000 candela
• Includes M-LOK® mount and hardware

ProTac Rail Mount 1L-X USB — Rechargeable / Standard Tailcap

Item #89027

• Includes SL-B9® rechargeable lithium-ion battery pack
• Rechargeable via USB
• Up to 850 lumens / 30,000 candela
• Standard push-button tail switch
• Includes M-LOK® mount and hardware

ProTac Rail Mount 1L-X USB Pro — Rechargeable / Pressure Switch Included

Item #89025

• Includes SL-B9® rechargeable lithium-ion battery pack
• Includes Jack-Cap® tailcap and remote pressure switch
• Up to 850 lumens / 30,000 candela
• Includes M-LOK® mount and hardware

Key Features

• Multi-fuel operation with CR123A or SL-B9® rechargeable battery
• TEN-TAP® programmable switch:
  • High / Strobe / Low
  • High only
  • Low / High
• M-LOK® mount included
• Compatible with 1913 Picatinny rails
• Pro models include remote pressure switch
• IP67-rated waterproof and impact resistant
• Durable 6000-series machined aluminum construction

Specifications

SL-B9® Rechargeable Battery

• Output: 850 lumens
• Candela: 30,000
• Beam Distance: 346 meters
• Runtime: 0.50 hrs High / 4.5 hrs Low

CR123A Battery

• Output: 500 lumens
• Candela: 18,000
• Beam Distance: 268 meters
• Runtime: 1.75 hrs High / 6.5 hrs Low

Dimensions

• Length: 4.64 in (11.79 cm)

Weight

• 5.50–5.60 oz (155.92–158.76 g)

What's Included

All models include:

• Streamlight ProTac Rail Mount 1L-X weapon light
• M-LOK® mount
• Mounting hardware

Additional components:

• USB models (#89027 / #89025): SL-B9® rechargeable battery + USB charging capability
• Pro models (#89024 / #89025): Jack-Cap® tailcap + remote pressure switch