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Streamlight
Overview
The Streamlight ProTac Railmount HL-X USB is a high-output flashlight designed for tactical applications, delivering 1000 lumens of bright light. This level of output allows for effective illumination in low-light conditions, making it easier to identify targets and navigate your surroundings. Builders often integrate this powerful light into mid-length gas system AR-15 builds chambered in 5.56 NATO, where versatility and performance are key considerations.
Specifications
Streamlight ProTac Railmount HL-X USB - 1000 Lumens
Available Merchants(6)
Prices checked
Price Alert
October 2026 on GunPartPicker
Streamlight ProTac Railmount HL-X USB - 1000 Lumens ranked #17 of the 101 weapon lights builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #21 of the 257 weapon lights builders have added. Builds with this weapon light are mostly chambered in 5.56 NATO (75%, then 300 Blackout 18%), split between mid-length (44%) and carbine-length (22%) gas systems, and mostly AR-15 (94%).
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today 4 of the 6 retailers we track have it in stock. It dipped to $135.99 at BattleHawk Armory for a stretch in October 2026, well under its usual $151.72, so sales do come around. Buying today, the lowest price is $135.99 at BattleHawk Armory, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
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We ranked every light by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Weapon Light Guide →Frequently Built With
The part most often added in each category by the builds that include this one
Sharps Bros Showdown Stripped Lower Receiver - Black, Unique Design and High-Performance for Custom AR Builds - SBLR11
PSA 16" Mid-length 5.56 NATO 1:7 Nitride 15" Lightweight M-LOK Upper W/BCG & CH
Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger
Radian Raptor Charging Handle & Talon Safety Selector Combo - OD Green
EOTECH XPS2 Holographic Sight, Tan - XPS2-0TAN
MFT Battlelink Minimalist Mil Spec Adjustable Stock, Black - BMSMIL-BK
Build Configuration Breakdown
Aggregated and anonymized data showing how builders use this product
PlatformBased on real build data showing which platform (AR-15, AR-10, AR-9) builders pair with this product.
CaliberBased on real build data showing which calibers builders choose alongside this product.
Gas SystemBased on real build data showing which gas system lengths builders use with this product.
Builds Featuring This Part
See all builds →Builds in the community that include the Streamlight ProTac Railmount HL-X USB - 1000 Lumens
| Build | Parts | Total |
|---|---|---|
 | 14 | $3630.19 |
 | 24 | $3214.65 |
 | 24 | $1126.99 |
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