SureFire G2X Pro vs ThruNite TC20 V3 size comparison
The ThruNite TC20 V3 is 7.1 mm (0.28 in) shorter than the SureFire G2X Pro, and 3.3 mm wider at its widest point. It is 72 g heavier (with battery).
The ThruNite TC20 V3 is 7.1 mm (0.28 in) shorter than the SureFire G2X Pro, and 3.3 mm wider at its widest point. It is 72 g heavier (with battery).
Dimensions
| SureFire G2X Pro Check price ↗ | ThruNite TC20 V3 Check price ↗ | |
| Length | 132.1 mm (5.20 in) | 125 mm (4.92 in)−7.1 mm |
| Head / width | 31.8 mm (1.25 in) | 35 mm (1.38 in)+3.3 mm |
| Body | 25.4 mm (1.00 in) | 28 mm (1.10 in)+2.6 mm |
| Weight | 124.7 g with batteries | 197 g with battery+72 g |
| Battery | 2x CR123A | 21700 |
| Max output | 600 lm | 4,720 lm |
| Throw | — | — |
| Type | EDC | EDC |
| Price | $99.00 at batteryjunction.com, as of Nov 4, 2026 | $79.95 at batteryjunction.com, as of Nov 4, 2026 |
| Source | batteryjunction.com sourced | batteryjunction.com sourced |
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G2X Pro vs TC20 V3: how they differ
Size and weight
The ThruNite TC20 V3 is the shorter light: 125 mm (4.92 in) against 132.1 mm (5.20 in), a difference of 7.1 mm (5%). At its widest point the SureFire G2X Pro is 3.3 mm slimmer (31.8 vs 35 mm). The SureFire G2X Pro is 72 g lighter (124.7 g vs 197 g, with batteries).
Brightness and throw
The ThruNite TC20 V3 is rated brighter: 4,720 lm maximum vs 600 lm for the SureFire G2X Pro, 687% more.
Battery
The SureFire G2X Pro runs on removable 2x CR123A batteries; the ThruNite TC20 V3 runs on a removable 21700 battery. For scale, a CR123A cell is about 17 × 34.5 mm and a 21700 about 21 × 70 mm (nominal).
Price
When we checked on Nov 4, 2026, the SureFire G2X Pro was $99.00 at batteryjunction.com and the ThruNite TC20 V3 $79.95 at batteryjunction.com, so the ThruNite TC20 V3 cost $19.05 less. Prices change often, so check the current price before you buy.
Type
Both are EDC lights in our catalog with a tube body.
Which should you buy?
Choose the SureFire G2X Pro if you want a slimmer profile (3.3 mm narrower) and less weight (72 g lighter). Choose the ThruNite TC20 V3 if you want a shorter light (7.1 mm shorter) and more output (4,720 lm vs 600 lm). We compare published size, weight, output, throw and battery only, not runtime, interface or build quality.
Check price ↗ SureFire G2X Pro Check price ↗ ThruNite TC20 V3
We may earn a commission from these links, at no cost to you. Rankings are never paid for. Disclosure
G2X Pro vs TC20 V3 FAQ
Which is smaller, the SureFire G2X Pro or the ThruNite TC20 V3?
The ThruNite TC20 V3 is the shorter light: 125 mm (4.92 in) against 132.1 mm (5.20 in), a difference of 7.1 mm (5%). At its widest point the SureFire G2X Pro is 3.3 mm slimmer (31.8 vs 35 mm). The SureFire G2X Pro is 72 g lighter (124.7 g vs 197 g, with batteries).
Which is brighter, the SureFire G2X Pro or the ThruNite TC20 V3?
The ThruNite TC20 V3 is rated brighter: 4,720 lm maximum vs 600 lm for the SureFire G2X Pro, 687% more.
Which is cheaper, the SureFire G2X Pro or the ThruNite TC20 V3?
When we checked on Nov 4, 2026, the SureFire G2X Pro was $99.00 at batteryjunction.com and the ThruNite TC20 V3 $79.95 at batteryjunction.com, so the ThruNite TC20 V3 cost $19.05 less. Prices change often, so check the current price before you buy.
Do the SureFire G2X Pro and ThruNite TC20 V3 use the same battery?
The SureFire G2X Pro runs on removable 2x CR123A batteries; the ThruNite TC20 V3 runs on a removable 21700 battery. For scale, a CR123A cell is about 17 × 34.5 mm and a 21700 about 21 × 70 mm (nominal).
Compare SureFire G2X Pro with similar lights
Compare ThruNite TC20 V3 with similar lights
More
Sources
- SureFire G2X Pro: specs from manufacturer published specs as listed by batteryjunction.com. Price $99.00 from batteryjunction.com, checked Nov 4, 2026; prices change often.
- ThruNite TC20 V3: specs from manufacturer published specs as listed by batteryjunction.com. Price $79.95 from batteryjunction.com, checked Nov 4, 2026; prices change often.
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