SureFire · In-Depth Breakdown
SureFire M640 U-Pro
1,000 lumens · 250m throw · 18650 · IPX7 rated
FlashlightRatings Score: 73.5/100
Best for EDC
At a Glance
How It Scores
Our algorithm scores every flashlight across six profiles. Select a profile to see which metrics drive the result. How we score →
Overall score
Buyer trust, value, raw performance, and build quality.
Formula v1 · select a profile above · nested rows show what feeds each composite
Strengths & Trade-offs
Strengths
Trade-offs
- 184g puts this on the heavier side of pocket lights. Noticeable in a front pocket over extended carry.
- 155.0mm length is manageable but longer than compact EDC lights — may poke out of shallower pockets.
- No electronic lockout feature means you'll need to physically lock out the tail cap (if possible) to prevent accidental activation.
- No pocket clip is included — you'll need a holster or aftermarket clip for secure carry.
Use Case Analysis
Tactical & Law Enforcement
The SureFire M640 U-Pro earns a 71.6/100 tactical score. Its 1,000-lumen output can temporarily disorient a subject and illuminate threats at distance. A tail switch enables instinctive cigar-grip activation preferred by most tactical users.
Everyday Carry
Scoring 73.3/100 in our EDC category, the SureFire M640 U-Pro weighs 184g, which is reasonable for daily carry.
Hardware & Build Quality
Power System
The SureFire M640 U-Pro runs on 18650 batteries with none recharging. The battery is user-replaceable.
Construction
Built from aluminum, the M640 U-Pro weighs 184g and measures 155.0mm in length. The head diameter is 25.4mm. Impact resistance is rated at 1.0 meters.
Emitter
The LED emitter produces up to 1,000 lumens. The beam pattern is hybrid.
What Buyers Say
Based on 964 Amazon customer ratings.
With a 4.7/5 average across 964 ratings, buyers overwhelmingly recommend this flashlight.
Bottom Line
The SureFire M640 U-Pro is a solid performer that delivers good value in its category. Its best fit is edc use, where it scores 73.3/100. At $315.00, pricing is in line with competitors in this segment.
Worth Comparing
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