Glock 43X vs. SIG P365
Both are 10-round micro-compact 9 mm records. The measurable split is size: the G43X is 18 mm longer, a millimeter wider, and carries the longer barrel. The weight question has no honest answer, because the two makers publish different measurement conditions.
Eighteen millimeters apart in length. Heights not on a shared basis.
The G43X is longer in the cited base-model data.
The G43X has the longer manufacturer-listed barrel.
The makers publish different measurement conditions.
The base-model specification matrix.
| Field | G43X | P365 | G43X difference |
|---|---|---|---|
| Manufacturer size label | Compact Slimline | Micro-Compact | Maker's own words |
| Chambering | 9x19 mm | 9mm Luger | Same cartridge |
| Overall length | 6.50 in | 5.8 in | +0.70 in |
| Overall width | 1.10 in | 1.06 in | +0.04 in |
| Overall height | 5.04 in (incl. magazine) | 4.3 in (magazine state not stated) | Bases differ |
| Barrel length | 3.41 in | 3.1 in | +0.31 in |
| Weight without magazine | 16.40 oz | Not stated | — |
| Weight with empty magazine | 18.70 oz | Not stated | — |
| Weight, magazine state unstated | — | 17.8 oz | Not comparable |
| Standard capacity | 10 rounds | 10 rounds | Same |
| Trigger pull | 24 N / 5.4 lb | Not published | — |
| Warranty | One year | Infinite Guarantee | Different terms |
Which overall-length record do you want to inspect further?
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The G43X is the larger record in every comparable dimension.
Glock lists the G43X at 6.50 inches overall against SIG's 5.8 inches for the P365 — an 18 mm difference. Width is 1.10 inches against 1.06, and the G43X's 3.41-inch barrel is about 8 mm longer than the P365's 3.1 inches. Both makers file these pistols in the same class: Glock calls the G43X a Compact Slimline, SIG calls the P365 a Micro-Compact, and both normalize to this directory's micro-compact frame class.
Height is the one dimension this article will not turn into a clean delta. Glock's 5.04-inch figure explicitly includes the magazine; SIG's 4.3-inch figure does not state the magazine condition at all. The 19 mm gap on paper is real data, but it is two measurements taken under conditions only one maker disclosed.
The weight comparison cannot honestly be made.
Glock publishes two weights for the G43X: 465 g (16.40 oz) without a magazine and 530 g (18.70 oz) with an empty one. SIG publishes a single figure for the P365 — 504.6 g (17.8 oz) — and does not state whether a magazine is included.
SIG's number falls between Glock's two. If SIG weighed without a magazine, the G43X is the lighter pistol; if SIG weighed with an empty magazine, the G43X is the heavier one. The published data cannot resolve which, so this comparison records all three figures with their conditions and declines to rank them.
SIG publishes no trigger-pull figure.
Glock lists the G43X trigger at 24 N (5.4 lb). SIG's product page describes “the clean crisp trigger pull you expect from a SIG” and attaches no number to it, so the trigger row in the matrix above has one value and no delta. Warranty terms also genuinely differ: Glock's one-year warranty against SIG's unlimited-duration Infinite Guarantee — one of the few rows where the difference is contractual rather than dimensional.
147 mm overall; 78.74 mm barrel; one published weight, condition unstated.
165 mm overall; 87 mm barrel; two published weights, both conditions stated.
What the data supports—and what it cannot.
The manufacturer records support a clear dimensional distinction: the P365 is shorter, fractionally narrower, and shorter-barreled at the same 10-round standard capacity. They do not establish that either pistol is easier to carry, more reliable, more accurate, or a better personal fit — and they cannot even establish which is lighter. Those conclusions require evidence and context beyond the specification sheets.
Base records only: no MOS, no manual safety, no P365X.
This article compares the base G43X record with SIG's base P365 Nitron Micro-Compact, SKU 365-9-BXR3. The G43X MOS, the manual-safety and Massachusetts-compliant P365 SKUs, and the wider P365 line — X, XL, X-Macro, Fuse, AXG, 380 — are separate listings and separate records. Nothing measured here transfers to them.
Open the current G43X recordOpen the current P365 recordCompare current directory records
Common Glock 43X and SIG P365 questions.
01Is the Glock 43X bigger than the SIG P365?
In every directly comparable listed dimension, yes: the G43X is 18 mm longer overall, 1 mm wider, and its barrel is about 8 mm longer. Height is the caveat — Glock's 128 mm figure includes the magazine while SIG does not state the magazine condition for its 109 mm figure, so that gap is not a clean comparison.
02Which weighs less, the Glock 43X or the SIG P365?
The cited manufacturer pages cannot answer that. Glock publishes two conditions — 465 g without a magazine and 530 g with an empty one — while SIG publishes a single 504.6 g figure without stating whether a magazine is included. SIG's figure falls between Glock's two, so the ranking depends on a condition SIG does not state.
03Do the Glock 43X and SIG P365 hold the same number of rounds?
Yes, in the standard configurations cited here: both records list a 10-round standard magazine, and neither cited product page lists optional capacities for these base models.
04Are the Glock 43X and SIG P365 the same caliber?
Yes. Glock lists 9x19 mm and SIG lists 9mm Luger — two names for the same chambering.
05Is this a comparison of the MOS or P365X models?
No. This article compares the base G43X record with SIG's base P365 Nitron Micro-Compact, SKU 365-9-BXR3. The G43X MOS, the manual-safety P365 SKUs, and the wider P365 line — X, XL, X-Macro, and the rest — are separate records.
Technical figures are manufacturer-sourced and preserved here as a base-model comparison reference.
- Glock 43X — Technical DataAccessed Aug. 11, 2026
- SIG SAUER P365 Nitron Micro-Compact — Specifications (SKU 365-9-BXR3)Accessed Aug. 12, 2026
- Guns Unpacked methodologyHow fields are verified
Reference information only. Not legal, purchasing, training, carry, storage, or assembly advice. Manufacturer technical data are rounded and may change.