Streamlight

Streamlight ranked #21 of 323 brands on GunPartPicker in September 2026, just behind SureFire, with about 1% of every part builders added. Up from #24 in August. Builders reached for Streamlight mostly for light parts. The most added single part was the Streamlight ProTac Rail Mount HL-X Laser 1000 Lumen Weapon Light with Tape Switch - CR123A, on top again this month.

Weapon lights were the busiest Streamlight category in September: 298 products came back in stock, several more than once, and demand for them rose about 10% on August. About 75% of the 640 Streamlight products we track are in stock today.

Also popular this month: Streamlight ProTac Rail Mount HL-X 1000 Lumen Weapon Light with Tapeswitch, Streamlight TLR-1 HL Rail Mount Weapon Light - Dual Remote KIT - 1000 Lumen - Black, Streamlight Remote Pressure Switch KIT for TLR-1 or TLR-2 Series Weapon Lights - Coil and Streamlight TLR 9 FLEX Rail Mount Weapon Light With HIgh/Low Switch - 1000 Lumens.

In GunPartPicker builds

• #1Most added weapon light brandTop part: ProTac Rail Mount HL-X Laser, 1000 lumen, tape switch, CR123A
• #33rd most added light switch brandTop part: Remote Pressure Switch Kit for TLR-1 / TLR-2

Why Streamlight

Streamlight is a flashlight company from Eagleville, Pennsylvania that's been at it for more than 50 years. Its TLR weapon lights turned 20 in 2026, and the TLR-1 started the line as the company's first aluminum light for full size guns.

The TLR-1 HL is the one you see everywhere: 1,000 lumens, 20,000 candela, two CR123A cells, 4.32 oz, machined 6000 series aluminum and IPX7. For rifles there's the ProTac Rail Mount HL-X, with 1,000 lumens, 50,000 candela and either two CR123A cells or a rechargeable pack.

Pistol lights run from the TLR-1 down to the new polymer TLR-3X at $170, and the TLR-8 pairs a light with a laser. New for 2026, the ProTac Rail Mount VIR Pro puts 1,100 lumens of white light and an IR illuminator in one rifle light.

Streamlight makes the most added weapon light, in 51% of builds that have one, at about $155, right on the typical light price. Its remote switches rank third, in about 20% of builds with a switch.

The usual complaint is the ProTac rail lights. There's no front battery spring, so under recoil the cell can lose contact and the light flickers, which is why aftermarket tailcap adapters exist. The lifetime warranty also drops to two years for switches, electronics and rechargeable batteries.

We'd put a TLR-1 HL on a pistol and an HL-X on a first rifle build. It's the value choice, and a tailcap adapter fixes the flicker if you get it.