SIG P365 X-Macro vs Glock 43X (2026): Specs, Capacity and Price Compared

Put the SIG P365-XMACRO and the GLOCK 43X side by side and they look closer than ever. Both are about an inch wide, about six and a half inches long, and built to carry all day. The difference is in what you get for the money: capacity, barrel length, sights, optics and price.

We lined up the official spec sheets from SIG Sauer and GLOCK, including GLOCK's April 2026 announcement that changes the capacity math, then checked what both guns actually sell for on Guns.com. Every number below was checked on September 24, 2026, and every spec links back to its source.

How we compared them

This is a research-based comparison, not a range test. We haven't shot these pistols for this article, and we'll update the page when we do. We compared the standard 3.7-inch P365-XMACRO (SKU 365XCA-9-BXR3) with the GLOCK G43X using each maker's own published data from sigsauer.com and us.glock.com, then priced both on Guns.com (90 X-Macro search results and 253 G43X listings). Where a maker doesn't publish a number, like SIG's trigger pull or GLOCK's price, we say so.

Side-by-side specs

Specs from sigsauer.com (SKU 365XCA-9-BXR3) and us.glock.com (G43X), prices from sigsauer.com and Guns.com listings, all checked September 24, 2026. Maker figures are rounded; GLOCK notes its data "may be altered without notice."

The quick read: the X-Macro wins on capacity, barrel and sight radius. The 43X is lighter, slightly shorter and shorter in the grip, and it costs less. Per round of capacity, the 2026 G43X works out to $29.87 against $39.41 for the X-Macro.

Head to head

Capacity: 17 vs 15 (it used to be 17 vs 10)

This was the X-Macro's knockout punch. SIG packs 17+1 into a grip about an inch wide, with two 17-round steel magazines in the box. GLOCK's G43X product page still lists 10 rounds standard. But on April 17, 2026, GLOCK announced that the G43X and G48 "will come standard with 15-round GLOCK magazines," a new metal, double-stack design that works with the standard magazine catch, arriving at dealers in May 2026. Guns.com's 2026 G43X listings ship with them. If you're buying new, make sure you're getting a 2026 model with 15-rounders; older stock may still ship with 10s. SIG still wins, 17 to 15, but the gap is now two rounds, not seven.

Size and weight: GLOCK is smaller and lighter

They're the same width (1.1 inches). The G43X is 0.1 inch shorter and 0.16 inch shorter in height with its magazine. On weight, GLOCK lists 18.7 oz with an empty 10-round magazine and SIG lists 22 oz with a magazine, so the 43X is roughly 3 oz lighter. One caveat: GLOCK hasn't published the weight or height of the new 15-round metal magazine, so a 2026 G43X with a 15-rounder may weigh a bit more than the figure above.

Barrel and sights: SIG goes longer

The X-Macro's 3.7-inch barrel is 0.29 inch longer than the G43X's 3.41-inch GLOCK Marksman Barrel, and its sight radius is 5.6 inches vs 5.24. A longer sight radius makes iron sights easier to align precisely. SIG ships every X-Macro with XRAY3 day/night sights. GLOCK lists polymer, steel and GNS night-sight options for the G43X, so check which sights a given listing includes.

Red dots: every X-Macro is ready

Every P365-XMACRO has an optic-ready slide cut for the Shield RMSc footprint, which fits SIG's ROMEO-X COMPACT. With GLOCK you need the G43X MOS, which has slide cuts for micro-optics but, per GLOCK, "does not come with adapter plates." The MOS costs a little more ($484.99 for the 2026 MOS on Guns.com). If you know you want a red dot, the X-Macro is the simpler path.

Trigger, safety and rail

GLOCK publishes a 24 N trigger pull, about 5.4 lb. SIG doesn't publish a pull weight for the X-Macro; its page describes a flat-faced striker trigger. The X-Macro is available with or without a manual safety; GLOCK lists no manual-safety G43X. For lights, SIG uses a standard M1913 rail, while GLOCK uses its own slim mounting rail, so check that a light fits before you buy it. The X-Macro also includes small, medium and large backstraps.

Price: GLOCK is cheaper

SIG lists the P365-XMACRO at $719.99 and the COMP at $819.99. GLOCK doesn't list prices on its site. On Guns.com, the lowest new X-Macro was $669.99 (a 3.7-inch package with three 17-round magazines), and the standard SKU was $729.99. The lowest new G43X was $448, a 2026 model with 15-round magazines, and used G43Xs started at $379.99. New to buying online? Our guide to how buying a gun on Guns.com works covers the dealer transfer and fees.

The contenders

Most capability in a slim gun

SIG P365-XMACRO: from $669.99

9mm · 17+1 · 3.7" barrel · 22 oz with magazine · 6.6" long · optic-ready · SIG list $719.99

SIG's pitch is "MACRO means MORE," and the spec sheet backs it up: full-size capacity in a one-inch-wide gun, a longer barrel than the 43X, night sights and an optic cut on every model, a standard rail and optional manual safety. SIG also backs it with its Infinite Guarantee: "no receipts, no warranty cards, fully-transferable, forever." The price of all that is a slightly bigger, heavier pistol that costs more.

Pros

• + 17+1 with two steel magazines
• + 3.7" barrel and 5.6" sight radius
• + XRAY3 day/night sights and an optic cut standard
• + Optional manual safety; M1913 rail; three backstraps

Cons

• − About 3 oz heavier than the G43X
• − Costs more: $669.99+ vs $448+ new
• − SIG doesn't publish a trigger pull weight

See the P365-XMACRO on Guns.com →

The X-Macro with a built-in compensator

SIG P365-XMACRO COMP: $829.99

9mm · 17+1 · 3.1" barrel with integrated compensator · 21.5 oz · 6.6" long · SIG list $819.99

The original X-Macro. It trades the 3.7-inch barrel for a 3.1-inch barrel and an integrally compensated slide, which SIG says "reduces muzzle flip and makes follow-up shots faster and more accurate." Same length and grip, half an ounce lighter, $100 more at SIG's price. It was $829.99 new on Guns.com.

Pros

• + Compensator to fight muzzle flip, per SIG
• + Same 17+1 and optic-ready slide

Cons

• − Shorter 3.1" barrel and 5.1" sight radius
• − $100 more than the standard X-Macro

See the X-Macro COMP on Guns.com →

Best value

GLOCK G43X (2026): from $448

9mm · 15+1 with 2026 magazines (10+1 on older stock) · 3.41" barrel · 18.7 oz with empty 10-rd mag · 6.50" long · 5.04" tall

The G43X is GLOCK's Slimline: the short barrel of the G43 with a longer grip, a built-in beavertail, a reversible magazine catch, front slide serrations and GLOCK's Marksman Barrel. The 2026 guns fix its biggest weakness, capacity, with the new 15-round magazines. It's lighter and a touch smaller than the X-Macro, and it's the cheaper gun: $448 new on Guns.com, whose listing shows a "retail" price of $538.

Pros

• + Lighter (18.7 oz with empty 10-rd mag) and slightly smaller
• + 15-round magazines standard from 2026
• + Cheaper: $448 new, used from $379.99
• + Published 24 N (about 5.4 lb) trigger

Cons

• − Standard model isn't optic-ready (buy the MOS)
• − Shorter barrel and sight radius; night sights depend on the version
• − Slim proprietary rail; no manual-safety version
• − Older stock may still ship with 10-round mags

See the G43X on Guns.com →

GLOCK with a red dot cut

GLOCK G43X MOS (2026): $484.99

Same frame and barrel as the G43X · 18.55 oz with empty 10-rd mag · slide cut for micro-optics · no adapter plates included

If you want a GLOCK with a red dot, this is the one. GLOCK lists it at 16.26 oz without a magazine, a hair lighter than the standard G43X. The 2026 MOS on Guns.com was $484.99. Budget for the right optic and check fitment, since GLOCK doesn't include adapter plates.

Pros

• + Optic-ready GLOCK Slimline
• + $484.99 new for the 2026 model

Cons

• − No adapter plates included
• − Same short barrel and sight radius as the G43X

See the G43X MOS on Guns.com →

Which should you buy?

Buy the SIG P365-XMACRO if you want one gun that does concealed carry and serious range work: more rounds, a longer barrel, night sights, and a red dot whenever you're ready. It's the better-equipped pistol out of the box, and the extra $222 or so buys real features.

Buy the GLOCK 43X if light weight, a slightly smaller package and price matter most, or you already shoot GLOCKs and like the trigger and manual of arms. With 15-round magazines standard in 2026, you're no longer giving up seven rounds to save money. Want a red dot? Get the G43X MOS.

Still shopping the wider field? See our 10 best 9mm pistols of 2026, the best-selling 9mm pistols in America, our micro-compact rankings and the best concealed carry guns by caliber.

Frequently asked questions

Is the SIG P365 X-Macro bigger than the Glock 43X?

Slightly. Both are 1.1 inches wide. The X-Macro is 6.6 inches long and 5.2 inches tall vs 6.50 and 5.04 for the G43X, and about 3 oz heavier by the makers' figures (22 oz with magazine vs 18.7 oz with an empty 10-round magazine).

How many rounds does the Glock 43X hold in 2026?

GLOCK announced on April 17, 2026 that the G43X and G48 will come standard with new 15-round metal double-stack magazines, at dealers from May 2026. GLOCK's product page still lists 10 rounds standard, and older inventory ships with 10-round magazines, so check the listing. The P365-XMACRO holds 17+1.

Which is cheaper, the P365 X-Macro or the Glock 43X?

The G43X. On September 24, 2026, the lowest new G43X on Guns.com was $448 and the lowest new P365-XMACRO was $669.99. SIG lists the X-Macro at $719.99; GLOCK doesn't publish prices.

Is the Glock 43X optic-ready?

Only the G43X MOS, which has slide cuts for micro-optics. GLOCK notes it doesn't come with adapter plates. Every P365-XMACRO is optic-ready for the Shield RMSc footprint (SIG's ROMEO-X COMPACT).

Does the P365 X-Macro come with a manual safety?

It's available with or without one; SIG sells both versions. GLOCK doesn't list a manual-safety G43X.

What's the difference between the P365 X-Macro and the X-Macro COMP?

The COMP has a 3.1-inch barrel with an integrally compensated slide to reduce muzzle flip; the standard X-Macro has a non-ported 3.7-inch barrel. Both hold 17+1. SIG lists the COMP at $819.99 and the standard at $719.99.

The bottom line

The P365-XMACRO is the more capable pistol: 17+1, a 3.7-inch barrel, night sights and an optic cut standard, and an optional manual safety, all in a gun as wide as the GLOCK. The GLOCK 43X is the lighter, smaller and cheaper one, and its 2026 move to 15-round magazines makes it a much closer fight than it used to be. If you want the most features, buy the SIG. If you want the best value and a proven Slimline, buy the 2026 G43X, or the MOS if a red dot is in your plans. Either way, carry it, train with it, and you're well armed.

Talk soon,
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