Fenix GL19R V2.0 vs SureFire X300U-A size comparison
The SureFire X300U-A is 1.5 mm (0.06 in) longer than the Fenix GL19R V2.0, and 3.4 mm narrower at its widest point. It is 6 g lighter (with battery).
The SureFire X300U-A is 1.5 mm (0.06 in) longer than the Fenix GL19R V2.0, and 3.4 mm narrower at its widest point. It is 6 g lighter (with battery).
Dimensions
| Fenix GL19R V2.0 Check price ↗ | SureFire X300U-A Check price ↗ | |
| Length | 94 mm (3.70 in) | 95.5 mm (3.76 in)+1.5 mm |
| Height | 32 mm (1.26 in) | 28.6 mm (1.13 in)−3.4 mm |
| Thickness | 31 mm (1.22 in) | 28.6 mm (1.13 in)−2.4 mm |
| Weight | 119 g with battery | 113 g with batteries−6 g |
| Battery | 18350 | 2x CR123A |
| Max output | 1,200 lm | 1,000 lm |
| Throw | 420 m | 213 m |
| Type | Weapon light | Weapon light |
| Price | $99.95 at fenixlighting.com, as of Nov 4, 2026 | $379.00 at surefire.com, as of Nov 4, 2026 |
| Source | fenixlighting.com sourced | surefire.com sourced SureFire publishes length and bezel diameter only (drawn at bezel height); throw computed from 11,300 cd peak intensity |
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GL19R V2.0 vs X300U-A: how they differ
Size and weight
The Fenix GL19R V2.0 is the shorter light: 94 mm (3.70 in) against 95.5 mm (3.76 in), a difference of 1.5 mm (2%). At its widest point the SureFire X300U-A is 3.4 mm slimmer (28.6 vs 32 mm). The SureFire X300U-A is 6 g lighter (113 g vs 119 g, with battery).
Brightness and throw
The Fenix GL19R V2.0 is rated brighter: 1,200 lm maximum vs 1,000 lm for the SureFire X300U-A, 20% more. For beam distance the Fenix GL19R V2.0 reaches further: 420 m vs 213 m rated throw (97% more).
Battery
The Fenix GL19R V2.0 runs on a removable 18350 battery; the SureFire X300U-A runs on removable 2x CR123A batteries. For scale, a 18350 cell is about 18 × 35 mm and a CR123A about 17 × 34.5 mm (nominal).
Price
When we checked on Nov 4, 2026, the Fenix GL19R V2.0 was $99.95 at fenixlighting.com and the SureFire X300U-A $379.00 at surefire.com, so the Fenix GL19R V2.0 cost $279.05 less. Prices change often, so check the current price before you buy.
Type
Both are weapon lights in our catalog with a weapon body.
Which should you buy?
Choose the Fenix GL19R V2.0 if you want more output (1,200 lm vs 1,000 lm) and longer throw (420 m vs 213 m). Choose the SureFire X300U-A if you want a slimmer profile (3.4 mm narrower) and less weight (6 g lighter). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ Fenix GL19R V2.0 Check price ↗ SureFire X300U-A
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
GL19R V2.0 vs X300U-A FAQ
Which is smaller, the Fenix GL19R V2.0 or the SureFire X300U-A?
The Fenix GL19R V2.0 is the shorter light: 94 mm (3.70 in) against 95.5 mm (3.76 in), a difference of 1.5 mm (2%). At its widest point the SureFire X300U-A is 3.4 mm slimmer (28.6 vs 32 mm). The SureFire X300U-A is 6 g lighter (113 g vs 119 g, with battery).
Which is brighter, the Fenix GL19R V2.0 or the SureFire X300U-A?
The Fenix GL19R V2.0 is rated brighter: 1,200 lm maximum vs 1,000 lm for the SureFire X300U-A, 20% more. For beam distance the Fenix GL19R V2.0 reaches further: 420 m vs 213 m rated throw (97% more).
Which is cheaper, the Fenix GL19R V2.0 or the SureFire X300U-A?
When we checked on Nov 4, 2026, the Fenix GL19R V2.0 was $99.95 at fenixlighting.com and the SureFire X300U-A $379.00 at surefire.com, so the Fenix GL19R V2.0 cost $279.05 less. Prices change often, so check the current price before you buy.
Do the Fenix GL19R V2.0 and SureFire X300U-A use the same battery?
The Fenix GL19R V2.0 runs on a removable 18350 battery; the SureFire X300U-A runs on removable 2x CR123A batteries. For scale, a 18350 cell is about 18 × 35 mm and a CR123A about 17 × 34.5 mm (nominal).
Compare Fenix GL19R V2.0 with similar lights
Compare SureFire X300U-A with similar lights
More
Sources
- Fenix GL19R V2.0: specs from Fenix product page (manufacturer). Price $99.95 from fenixlighting.com, checked Nov 4, 2026; prices change often.
- SureFire X300U-A: specs from SureFire product page (manufacturer). Price $379.00 from surefire.com, checked Nov 4, 2026; prices change often.
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