Streamlight Protac Rail Mount HL-X Pro Long Gun Light - USB Rechargeable, Model 88129

The Streamlight ProTac Rail Mount HL-X Pro is a long-range, gun-mounted tactical light built for shooters who need reliable illumination in low-light hunting and tactical situations. This compact, low-profile light clamps directly to MIL-STD-1913 Picatinny rails and delivers serious throw—1,000 lumens on high with 50,000 candela and a 447-meter beam distance. Whether you're running a precision rifle, modern sporting rifle, or shotgun platform, the ProTac Rail Mount HL-X Pro pairs genuine long-distance capability with the flexibility of multiple power sources and operating modes.

The light ships as either "Light Only" or as a complete System with a remote pressure switch, Jack-Cap tail switch, M-LOK mount clips, and installation hardware. The dual tail-cap switch design gives you operational redundancy—hit it directly or use the remote switch for hands-free firing support. Ten-tap programming lets you choose between three operating modes: high/strobe, high only, or low/high, so you can dial in exactly what your application demands. On high you get 1.75 hours of runtime with the included SL-B26 USB-rechargeable battery, or swap in two CR123A lithium batteries for 1.25 hours. Drop to low (60 lumens, 111 meters) and stretch that battery life to 21–24 hours depending on which power source you choose.

Built from durable, anodized aluminum with an impact-resistant tempered glass lens, the ProTac Rail Mount HL-X Pro is rated IP67 waterproof to 1 meter for 30 minutes (without the remote switch), so heavy rain and splash won't stop your hunt. The sturdy rail clamp means zero wobble once it's mounted. With USB rechargeability on tap and proven Streamlight reliability, this is a serious light for serious shooters who don't compromise on beam distance or battery flexibility.

Key Features

• 1,000 lumens on high with 50,000 candela for maximum long-range reach (447 meters)
• Three user-selectable operating modes: high/strobe, high only, or low/high
• Dual tail-cap switch: direct push-button or optional remote pressure switch for redundancy
• Multi-fuel: USB-rechargeable SL-B26 battery or two CR123A lithium batteries
• Compact, low-profile aluminum body clamps securely to Picatinny rails
• IP67 waterproof rating (1 meter for 30 minutes without remote switch)
• System package includes remote pressure switch, remote clips, double-sided tape, and cable ties
• Durable anodized finish with impact-resistant tempered glass lens

Specifications

Frequently Asked Questions

What rail systems is the ProTac Rail Mount HL-X Pro compatible with?

The light mounts to any MIL-STD-1913 (Picatinny) rail. The integrated rail clamp provides secure attachment to modern rifles, shotguns, and carbines with standard Picatinny mounting surfaces.

Can I use a remote pressure switch, and is it included?

Yes. The remote pressure switch is included in the System package and plugs into the Jack-Cap tail switch for hands-free operation. The light-only option does not include the remote switch, but it can be purchased separately and is fully compatible.

What batteries does it use, and can I recharge it?

The ProTac Rail Mount HL-X Pro uses one Streamlight SL-B26 protected Li-Ion USB-rechargeable battery pack, or alternatively two CR123A lithium batteries. The SL-B26 is rechargeable via USB; CR123A batteries are single-use. Runtime varies slightly by battery type and operating mode.

How waterproof is this light for hunting in rain?

The light is rated IP67, meaning it's waterproof to 1 meter for 30 minutes when used without the remote pressure switch installed. With the remote switch connected, the water rating drops to IP54 (water-resistant). Either way, it's built to handle rain and splash during field use.