The Streamlight ProTac Rail Mount 1L-X Pro is a compact, multi-fuel weapon light that delivers 500 lumens on its included CR123A battery (brand part no. 89024). Streamlight designed it for short-barreled rifles and carbines, and the Pro package adds the Jack-Cap tail cap, which gives you a push-button switch and a port for a remote pressure switch. The rail clamp fits MIL-STD-1913 Picatinny rails and an M-LOK mount comes in the box for M-LOK handguards. At 4.64 inches long and about 5.5 ounces, it stays compact on a carbine. It is a strong choice for a home defense carbine or a range rifle that needs a dependable, programmable light.

Key Specifications

• High output is 500 lumens on the included CR123A battery, with 18,000 candela and a 268-meter beam.
• Low output is 100 lumens, which runs for 6.5 hours on a CR123A.
• High runtime is 1.75 hours on a CR123A and strobe runs for 2.5 hours.
• TEN-TAP programming offers three selectable programs: High/Strobe, High Only and Low/High.
• The Jack-Cap tail cap provides push-button operation with an integrated port for a remote pressure switch.
• The package includes a momentary switch, M-LOK kit, hardware kit and 2.5 mm Allen wrench for mounting.
• The rail clamp fits MIL-STD-1913 Picatinny rails, and the M-LOK mount covers M-LOK compatible handguards.
• Power is multi-fuel: one CR123A lithium battery, or one Streamlight SL-B9 rechargeable pack, which raises high output to 850 lumens.
• The body is 6000 series machined aluminum with an anodized finish and a gasket-sealed glass lens.
• It is IP67 rated with the push-button switch, waterproof to 1 meter for 30 minutes, and IP54 rated with the remote pressure switch installed.

Frequently Asked Questions

What does the Pro version add to the ProTac Rail Mount 1L-X? The Pro uses the Jack-Cap tail cap for push-button or remote pressure switch operation and includes the momentary switch, M-LOK kit, hardware kit and Allen wrench.

Does it come with a battery? Yes. It includes one CR123A lithium battery. It also accepts the Streamlight SL-B9 rechargeable battery pack, which raises high output to 850 lumens.

What rails does it mount to? The integrated rail clamp fits MIL-STD-1913 Picatinny rails, and the included M-LOK mount lets it attach to M-LOK compatible rail systems.

Buy the Streamlight ProTac Rail Mount 1L-X Pro

A weapon light has to be easy to mount, simple to operate and tough enough to ride on a rifle, and the ProTac Rail Mount 1L-X Pro covers all three. The Jack-Cap gives you switch redundancy, and the programmable modes let you set the light the way you run your carbine. Order it from our Lubbock, Texas gun shop for fast, direct shipping, and see our other weapon lights.