Quick Comparison — Glock 43X vs SIG P365
| Specification | Glock 43X | SIG P365 (Standard) |
|---|---|---|
| Caliber | 9x19mm | 9x19mm |
| Capacity (Standard) | 10+1 | 10+1 (flush) |
| Capacity (Extended) | 15+1 (S15 mag) | 12+1 / 15+1 |
| Barrel Length | 3.41" | 3.1" |
| Overall Length | 6.50" | 5.8" |
| Width | 1.10" | 1.06" |
| Height | 5.04" | 4.3" |
| Weight | 16.69 oz | 17.8 oz |
| Sights | Standard white dot | XRAY3 Day/Night (tritium) |
| Optic-Ready | Yes (MOS model) | Yes (X model) |
| MSRP | $450 – $550 | $500 – $650 |
Who Is the Glock 43X For?
The Glock 43X takes the single-stack Glock 43 slide and mates it to a wider, 10-round grip frame. The result is a gun that carries like a micro but shoots like a compact. The longer grip provides a full three-finger purchase, making it significantly easier to shoot quickly than smaller alternatives.
Strengths of the Glock 43X
- Shootability: Full grip with all three fingers on the gun. Faster follow-up shots and better control during rapid fire.
- S15 Magazines: With Shield Arms S15 magazines, the 43X becomes a 15+1 micro-compact — matching Glock 19 capacity in a much slimmer package.
- Glock Reliability: Runs with any 9mm ammunition without break-in. The single-stack magazine is inherently reliable.
- Aftermarket Support: Glock ecosystem means holsters, sights, triggers, and accessories are ubiquitous.
Weaknesses of the Glock 43X
- Concealability: Taller and slightly longer than the P365. The longer grip prints more easily under a cover garment.
- Factory Capacity: Ships with 10-round magazines while the P365 includes extended magazines. S15 upgrade costs extra.
- Magazine Cost: S15 magazines cost ~$40 each plus the S15 metal magazine catch at $10.
Who Is the SIG P365 For?
The P365 packs 10+1 rounds into a package smaller than almost any single-stack 9mm on the market. The staggered-column magazine design uses a curved feed path that is a genuine engineering breakthrough. The P365 is for shooters who prioritize deep concealment without sacrificing firepower.
Strengths of the SIG P365
- Ultimate Concealability: 5.8" long, 4.3" tall, 1.06" wide. Disappears in an appendix holster, pocket holster, or ankle holster.
- Factory Night Sights: XRAY3 day/night sights with tritium front and contrasting rear dots — a $100 value Glock does not include.
- Magazine Ecosystem: SIG offers 10-round flush, 12-round extended, and 15-round magazines. All are reliable out of the box.
- Modularity: The P365 FCU (like the larger P320) allows grip module swaps across the P365 line.
Weaknesses of the SIG P365
- Snappier Recoil: The shorter barrel (3.1") and smaller grip make it noticeably snappier than the 43X during rapid fire.
- Pinky Hang: With the flush 10-round magazine, most shooters have their pinky dangling. The 12-round extended solves this but adds height.
- Trigger: Decent but has a longer reset than the 43X. Some shooters describe it as "gritty" out of the box before break-in.
MatchMyGun Verdict
If you prioritize deep concealment and factory features → buy the SIG P365.
If you prioritize shootability, grip comfort, and Glock reliability → buy the Glock 43X with S15 magazines.
The SIG P365 is the better pocket pistol. It hides better, comes with premium features out of the box, and has a wider range of factory magazine options. The Glock 43X is the better shooting gun. It is easier to control, has a better trigger, and with S15 magazines matches the P365 capacity in a more shootable package.