2 options






Click to see full view
SureFire
Overview
The SureFire M640U Scout Light Pro is a high-output weapon light designed to deliver 1000 lumens of illumination, making it suitable for various low-light scenarios. It operates on two CR123A 3V Lithium batteries and is constructed from durable aluminum, ensuring reliability in demanding environments. This light features a versatile mount type compatible with both M-LOK and Picatinny systems, making it an excellent addition to mid-length gas system builds in 5.56 NATO caliber rifles.
SureFire M640U Scout Light PRO Weapon Light - 1000 Lumens - Black
2 options
Prices checked
SureFire M640U Scout Light PRO Weapon Light - 1000 Lumens - Black is the fifth most added weapon light on GunPartPicker so far in November 2026, behind the SureFire X300-A Turbo Weapon Light - 650 Lumens - Tan, with about 7% of all weapon lights added to builds. Up from #7 in October. Builds with this weapon light are mostly chambered in 5.56 NATO (88%), split between mid-length (53%) and carbine-length (38%) gas systems, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today 8 of the 10 retailers we track have it in stock. It dipped to $268.99 at Ammunition Depot for a stretch in October 2026, well under its usual $341, so sales do come around. Buying today, the lowest price is $319.99 at Optics Planet, above October's low of $268.99, so a better deal may come back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
We ranked every light by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Weapon Light Guide →The part most often added in each category by hundreds of builds that include this one

Griffin Armament MK2 Ambi Stripped AR-15 Lower Receiver - Ambidextrous Controls - Flared Magwell - Anodized Black - MK2AL

EOTECH 3x30.5mm X 21.6mm Holographic Hybrid Green Dot Sight - HHSGRN

Geissele Automatics AR-15 SSA-E X Lightning Bow Trigger

Magpul AR-15 MOE Stock Collapsible Mil-Spec Black

Bravo Company Mfg Upper Receiver Assembly w/ Laser T-Markings, Hard Coated Anodized - 4-UR-M4

Radian Weapons AR-15 Raptor-SD Ambidextrous Charging Handle OD Green
Aggregated and anonymized data showing how builders use this product
Builds in the community that include the SureFire M640U Scout Light Pro Weapon Light - 1000 Lumens - Black
| Build | Parts | Total |
|---|---|---|
![]() | 27 | $6819.32 |
![]() | 20 | $4023.35 |
![]() | 27 | $6963.05 |
No reviews yet. Be the first to review this product!