SIG SAUER P365 XMACRO 9mm pistol
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SIG SAUER continues to expand on its modular P365 platform, this time by increasing capacity to the full-size pistol range and creating an offering for those wanting to jump on the compensated carry gun trend.

A new grip module extends the grip length of the slim, modular P365 to accept a full 17 rounds of 9mm ammo. And by using the P365’s 3.1-inch barrel in the longer P365XL slide SIG has been able to use the extra room to integrate a compensator for reducing muzzle flip.

A tabletop look at this new configuration can be seen in the video below . . .

The new grip module has been claimed by some to be very similar in size to SIG’s new P322 rimfire pistol, but as we don’t have one we can’t make that comparison. What we can say is that by keeping with the P365 platform and magazines, increasing capacity to 17 rounds only slightly lengthens the grip.

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Shooters with larger hands who found themselves almost satisfied with a P365XL and 15-round magazine will probably find the P365 XMACRO finally has a place for all their fingers.

The dust cover has been extended to meet the end of the slide and SIG’s proprietary rail system has been replaced with the more real-world-friendly Picatinny rail. Adding to the new grip module is the ability to select between one of three included backstraps (or don’t use one at all if you’re really kooky).

SIG SAUER P365 XMACRO gun review
The Sig P365 XMACRO (above right) with 17rd magazine is only slightly longer than the P365XL with 15-round magazine.

The compensation solution is an interesting one. The biggest problem with the current industry norm of threading a device onto the end of the barrel is that it adds weight with the most leverage possible to counter the way the barrel needs to move in order to properly cycle. The result is often a gun that becomes a picky eater. Of course that counter weight at the end of the muzzle is also a source of the “compensation” shooters feel.

I’m convinced that some of the compensation could more easily be replicated by using an old YouTuber hack: simply mount a big flashlight or weight to the rail of the gun. Adding weight out front counters muzzle flip nicely and both the gun and the shooter look cooler and the gun shoots flatter.

SIG SAUER P365 XMACRO gun review
The P365 XMACRO tucks the shorter 3.1″ barrel from the original P365 into the longer XL slide meant for a 3.7″ barrel.

Avoiding ammo sensitivity and reducing total weight, the P365 XMACRO instead uses the 3.1″ barrel from the P365 in a slide length usually used for a 3.7″ barrel. The compensation ports are then cut into the slide itself.

The only drawback I see to this design is it means your slide is sized like a P365 XL…but the muzzle energy and projectile performance is reduced to that of a P365.

I know most consumers don’t think about the fact that the majority of 9mm ammunition is formulated to perform best from a 4″ barrel, and maybe it really doesn’t matter much. I have yet to find a test subject willing to be shot with the same ammunition from a 4″ barrel and a 3.1″ barrel and then testify which round did the most damage. There are also a few loads out there, some made by SIG, with thinner jackets and other tricks to maximize performance from a sub 4-inch barrel.

SIG SAUER P365 XMACRO gun review
The P365 XMACRO’s 17rd magazine (R) is somehow not any larger than the P365 XL’s 15rd (L).

We hit the range with two shooters to get a feel for the P365 XMACRO and conduct our standard battery of experiences including filming our absolute first shots, testing the new magazine’s ability to run full-mag +1, trying out ten different loads from 90gr up to 165gr, a trigger control exercise, some practical accuracy, and lastly to give concluding thoughts.

The results can be seen in the video below. . .

One thing we didn’t test on camera for that video, but will include in a future video is how the frame feels with a regular (uncompensated) 365XL slide. We did this briefly as the sun was setting off camera and were both impressed with how much the compensator really changes the feel of the gun.

While testing the gun as-is, it simply felt like a pleasant-shooting pistol. So much so that we almost forgot this gun is still part of a “micro compact” family of guns…known more for being compact, not necessarily enjoyable at the range.

We also want to test a few rounds to see just how much energy is lost by going with a 3.1″ barrel. It’s long been my personal preference to carry a pistol with at least a 4″ barrel.

SIG SAUER P365 XMACRO gun review
The P365 XMACRO stock is extended to cover the 17rd magazine and will likely conceal better than the blocky 15rd P365 XL magazine.

On the range the P365 XMACRO was an overall joy to shoot. Reduced-energy aside, it seems that with this build, SIG has created a modular do-all kind of gun with the grip and capacity to serve as a viable home defense option, be pleasant enough to use in training.

I know most folks carry a small subcompact or micro-compact gun, but take a larger gun to training courses IF they even train at all). The P365 XMACRO is comfortable enough for training while still still slim enough to use as a carry gun.

Yes the grip is a touch longer than a P365 XL with a 15-round magazine, but because the length is made up of more rounded grip instead of a boxy protruding magazine, I suspect it will conceal better by printing less obviously.

Specifications: P365 XMACRO 

Caliber: 9mm
Capacity: 17+1
Overall length: 6.6 inches
Overall height: 5.2 inches
Overall width: 1.1 inches
Barrel length: 3.1 inches
Sight Radius: 5.1 inches
Weight (w/magazine): 21.5 oz.
Current Retail Price: around $799

Ratings (out of five stars):

Reliability * * * * *
Not a single malfunction with any of the eleven types of ammunition used.

Ergonomics * * * * *
Somehow this thin pistol fit both my XXL-glove hands and Teya’s M-glove hands just fine. Three included backstraps allow for some change, but we both found the large backstrap to be the most comfortable.

Accuracy * * * * *
Once you learn to punch through the carry-grade trigger it’s easy to put shots where you want them.

Concealability * * * * 
The longer grip likely conceals better for those who appendix carry than those who carry strong side, rounded corners of the grip will print less than a P365 XL with a 15-round magazine.

Overall: * * * * 1/2
This is an excellent little pistol. I don’t have any criticisms that aren’t already accepted when selecting this pistol. I believe the SIG P365 XMACRO can become the new replacement for the older “compact” (4″ 15-rd 9mm) concept and offers more comfortable carry and higher capacity.

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  1. I don’t get it. You make a small pistol so it’s easy to conceal. Then you make I bigger so it’s easier to shoot well. Everything is a compromise. Why wouldn’t I just buy a larger pistol to begin with? I thought the Glock 43X was just plain stupid.

    • Agree, I live in Texas and can’t conceal this in the summer as well as I can with my 365XL because of the grip. I don’t bother with the extended mag because the grip sticks out more – exactly the problem as the X Macro. I always try to dress appropriately when concealing, but when it’s 104 outside I sure as hell ain’t gonna layer up. More layers in other parts of the year? Fine, but like you said, you might as well get a larger gun.

    • Gadsden,

      “…just buy a larger pistol…”

      Exactly. When I decided my EDC should have more capacity, I purchased an M&P 9C, not a G43X. The 9c is about the same size as a G19. I don’t worry about concealment since my EDC holster is a Sneaky Pete.

      So, now the G43 can sit in a pocket holster in my ‘dress-up’ cargo pants when I go on-site with clients. Every gun has a purpose.

      God Bless the USA!!

    • Millions of us who live in hot climates, yet don’t have baby hands, carry a micro when we have to and a comfortable hand-filling pistol when we can.

      While it’s possible to train for different manuals of arms, triggers, and general “feel”, having them consistent every time is objectively easier and likely safer as well. It is also slightly cheaper (especially if upgrades are involved), and involves one fewer 4473 (even more of a benefit where waiting periods, the requirement to specify firearm(s) on one’s license, etc. are involved).

  2. Looks ok! I can probably afford the Taurus variation🙄🙃🙂 Another GREAT review from GB Guns…

    • Hush, this just in. Trump dropped it and housekeeping overlooked it for a couple of years.

  3. Went with the 365xl. Bought the Marco frame and some mags when it came out. Still conceals well with my Tenicor holster. Plus is I can switch around frames and mags to the 365xl for 10, & 12 rounds or 17 rounds in the XMacro. Got a red dot too cuz the front sight(s) are pretty fuzzy.
    This gun replaced G19 for my EDC. And the 1911s got too valuable to carry.

    • Went the other direction due to magazine limits and turned the XL into an L. Conceals great and helps squeeze the few extra fps I can get out of formal attire to business casual at work.

  4. On the news today, “White House evacuated after cocaine found in routine sweep by Secret Service”

  5. “Conservative websites were swift to point out that Hunter Biden, the president’s 53-year-old son who has admitted to battling addiction, was at the White House at the time.”

  6. I don’t like compensators on defensive guns. If you fire from retention, you’re blowing hot gas and unburned powder into your face. I still get hit with it when I’m standing over students, and it’s annoying/distracting.

  7. I like Walther and Beretta. Something I like about Walther is when they decided the PPQ needed an upgrade they did not trick out the PPQ they produced a whole new gun. And while the PDP has some similarities to the PPQ it is still a different gun. What I did not believe until I fired the PDP was the claim that they improved on the PPQ trigger. Well they did. It is subtle but better.

  8. Sorry for all the repeated comments.
    This is the first time any post has gone the moderator that eventually got posted.

  9. I think the amusing comparison of this would be to a smaller grip framed 320 to see how they compare. It seems as if everything is within 5-10% of the 17 round 320.

    I also wonder why you wouldn’t just get the smaller P365 and use grip extension mags. That way you can have it small when you need it small and not small when you don’t.

    • I have both, the Macro is smaller than the 15 round p320x compact in almost every dimension, width most of all. The Macro is more comfortable to carry and easier to conceal. I run mine with the full size XL slide and a curved trigger which I prefer.

  10. This isn’t a CC gun
    It’s a thinner replacement to the G19 etc with more rounds.
    It’s a complement to your cc 365

    I used to have a g26 and g19
    G26 is gone. I’m thinking of replacing the g19 with this. Though the version without the

  11. I have no trouble carrying my X Macro under just a tee shirt for a cover garment; same as my other carry guns, up to and including full size 1911s and 18 round Caniks.
    If y’all really think it’s “too big for CC;” you need to get a better gun belt and holster.

    It’s my latest “when the back’s out bad” carry gun.

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