The Sig Sauer P365 Nitron is a legend in its own lifetime. So there was always going to be a slew of Sig P365 accessories, upgrades and aftermarket parts.
We have a full list of suggestions, but first check these complete guns and see if you need to break out the tools at all, or you just want to buy a custom Sig P365 off the peg.
Custom Sig P365 Off the Shelf?
Before you go spending money on upgrades, parts and accessories, be sure the pistol you actually want isn’t sitting there on the shelf. Here are a few options for you.
1. Sig Sauer P365 XMACRO
- Price: $799.99
- Barrel: 3.1 inch
- Total Size: 5.8 inch
- Weight: 1.12lb
- Capacity: 17+1
The X-Macro might just be the best compact 9mm pistol on the market right now. it’s that good.
If you can handle the price bump from a Sig Sauer P365XL, you get 17+1 rounds of 9mm ammo in a package that easily conceals.
The compensator means it is slightly longer than the standard pistol. But it’s so cool.
Also that comp actually works and helps tame the famous P365 recoil. Everything else, from the magazine release to the grip angle, has been reworked.
2. Sig Sauer P365 SAS
- Price: $605.99
- Barrel: 3.1 inch
- Total SIze: 5.8 inch
- Weight: 1.12lb
- Capacity: 10+1
Sig sent its own engineers to work to refine the new benchmark for concealed carry pistols. The Sig Sauer P3655 Micro Compact SAS is the result.
Before you go spending $1000 to tune a stock Sig Sauer P365 9mm at the aftermarket parts and accessories shop, make sure this wasn’t the custom Sig you wanted all along.
It has a ported slide. You also get a trick Meprolight FT front sight that works like a very vague red dot sights system. That’s a third party upgrade, but the precision Sig engineering happens in-house.
Defensive Pistol Specialist
The SAS is not as accurate at the range as classic sights that line up planes. But as a defensive sight then we like it a lot. Especially integrated into the slide like this.
That’s a long way towards a completely custom gun and you no longer have to buy
3. Sig Sauer P365XL Spectre Comp
- Price: $1,219.99
- Barrel: 3.7 inch
- Total SIze: 6.5 inch
- Weight: 1.20lb
- Capacity: 12+1
The Sig Spectre 365 XL with a compensator is a flashy, John Wick style gun that you kind of want.
There are cheaper Spectre Works guns on sale here. Just organise the price low to high and you might grab a bargain.
Not only is the slide fitted with an integrated compensator, you also get XRAY sights, a flat gold trigger and other custom touches. It’s a totally reworked, high price, high spec pistol that probably isn’t worth the money, especially when the P365 XMACRO is standing right there.
But it is really cool. That can be enough.
Now The Parts & Accessories…
1. Sig P365 Extended Magazine 15 Rounds
- Price: $49.99
Sometimes the cheapest and simplest mods you make are the best. And there is no denying the straight value of five extra rounds in each P365 magazine.
An extended magazine is one of the fastest ways to measurably improve any gun. This one isn’t the prettiest, but it does give you some extra real estate with a pinky extension and then some to get a better grip on your gun.
You can also get a pinky extension on a 10-round 9mm magazine if you live in ‘those’ States.
The benefits go beyond the extra ammo in your 9mm magazine, then, but that’s really the big news here. Five more rounds makes the rest of this stuff look like window dressing. So get a new P365 magazine before anything else.
You can buy magazine base pads just about everywhere these days too. Get a contrasting color, Punisher logo, whatever floats your boat. Base pads normally come with a spring and are the work of minutes to install on existing magazines.
2. Custom Slide
- Grey Ghost Precision
- Price: $418.95
Custom slides are big business. But not all the big guns have options out yet.
Custom Glock experts Grey Ghost Precision has released the Grey Ghost Precision V1 and these pistol slides are epic.
You get real tangible benefits from these custom slides, like a loaded chamber indicator and an RMR plate for a micro red dot, specifically the 3 MOA Sig Romeo 1. You also get the screws to fix the Springfield Armory Shield SMS-C.
Grey Ghost Precision makes small parts, accessories and upgrades that are revered by the Glock and AR-15 community. They’re good and this video for the P320 pistol slides show just how good.
3. Wilson Combat Sig P365 Grip Module
- Price: $64.99
Wilson Combat and bargain aren’t words that go together too often. But you can get that legendary Starburst grip for less than $65 with P365 grip modules.
This grip module reprofiles the grip and handling characteristics. The company says the gun’s infamous recoil is contained better with this grip angle and bore axis adjustment. It has to be fractional, or the stock pistol parts would struggle to fit, but you can see a difference.
And pretty much all Wilson Combat parts are more than $65. So these grip modules are a rare treat.
4. True Precision 9mm Threaded Barrel
- Price: $170.99
The True Precision Sig Sauer P365 pistol match grade barrel is good to go with a
This True Precision custom barrel is made from 416R steel. The threaded match-grade barrel gets 6-groove rifling. The SAAMI spec chamber and polished feed ramp should give you a tangible improvement with the cycling times too.
5. Sig Romeo 1 Reflex Micro Reflex Sight
- Price: $399.99
Not everybody wants a reflex sight on their concealed carry pistol, until they try one.
Plenty of people don’t have 20/20 vision anymore. In a personal defense situation, too, nerves go through the roof and focus can be a real issue. It isn’t a sin to take all the help you can get.
These Sights Really Work
Micro red dot sights are taking off in a big way and we can vouch for both the Sig Romeo 1 and the Springfield Armory Shield. Both automatically adjust to the ambient brightness and gives you a clear field of view through the reticle.
That in itself can be huge in a home defense situation when something goes bump in the night.
6. Tyrant Designs Compensator
- Price: $79.95
Call it the John Wick effect, but we’re all that little more accepting of compensators on small guns thanks to the super assassin.
You know it’s true.
You also know that the stock Sig Sauer P365, while awesome, is a little snappy. Tyrant Designs claims to have tamed the beast with this simple compensator.
You’ll need a thead on your barrel, but the compensator screws right on and you can use any open ended holster with this compensator attached.
Strike Industries is another popular brand with parts for the P365, Sig P320 and much more.
7. Sig Sauer P365 Flat Trigger
- Price: $49.99
The flat trigger that comes as standard on the P365 XL just looks better.
Well you can throw away your traditional P365 trigger and replace it with a Sig 365 upgrade that is an OEM part from Sig. As accessories and upgrades go, this is one of the simplest.
Just $45 will get you the real deal and it’s a cinch to fit. And the flat P365 trigger is one of many custom parts, accessories and upgrades you can find at Sportsman’s Guide.
Get a 9mm 10 round magazine, an IWB holster, conversion kits, grips, a recoil reduction spring or a complete custom gun here.
8. Techna Clip Gun Belt Clip
- Price: $24.99
This simple belt clip eliminates the need for a holster. You do affix the clip permanently to your gun, so this is something you ither do all the time or never. But some people love a simple belt clip, and that’s what this is.
9. Lightning Strike Steel Striker Pin
- Price: $91.99
This was one of the hot new products for the Sig when it launched and had all those problems with the striker pin shearing. The Lightning Striker Steel Striker Pin was an instant fix for that troublesome issue and it’s still an upgrade.
Now we haven’t heard of any reliability issues of late, so this may be a redundant upgrade. But if you’re the kind of person that wants the best, then this is still technically better than the OEM striker.
10. Sig Foxtrot365 Tactical Light
- Price: $149.99
Things generally go bump in the night. So if you use your 9mm as a nightstand pistol, or you’re happy to compromise concealment for capability, then the Sig weapons light can be a real benefit.
At night, blinding weapon lights can be all you need to gain a competitive advantage. This 100 Lumens LED light is seriously powerful.
11. Crossbreed Supertuck IWB P365 Holster
- Price: $77.95
Crossbreed Holsters are some of the best Sig Sauer P365 holsters on the market.
The Crossbreed
Two clips and the central holster means
There are lots more compact P365 holster options on the market, and more rigid ones too. Check out just a few best-selling options here.
12. Sig Sauer SRD9 Suppressor
- Price: $699.99
- Caliber: 9mm Luger
Some States still want you to have fun and a suppressor can be just that. But where can you buy a suppressor online?
We got you.
Now forget about barrel length, weight, everything. But you knew that right? And your gun might not cycle, maybe 50% of the time. But except for that…
13. Sig Sauer Lima P365 Laser Sight
- $149.99
This OEM laser sight slots right on to the Sig for a low-drag draw that paints a red laser dot right on the target. Or a green laser, it’s really your choice.
In the heat of the moment, a clear line of fire can be a lifesaver. The light alone has that intimidation factor, too, so some people prefer to carry a weapon-mounted laser sight.
14. Pearce Grip Extension
- Price: $7.46
Get 5/8ths of an inch more real estate on the famously tiny handle with this basic magazine baseplate replacement.
The Pearce Grip Extension is cheap, it works and most people seem to like it. We’re not sure what else to say really…
16. DPM Recoil Reduction System
- Price: $75
The 365 is a snappy little creation and there are various ways to combat muzzle rise, increase your cycling speed and improve your accuracy. This is the best for $75…
Three springs combine to create staged resistance and the third spring controls the slide. That stops it ramming the frame and potentially increases the lifespan of your micro-compact pride and joy.
An advanced spring parts kit can also reduce jams. It’s all win here…
Where to buy random P365 parts
You don’t always need custom gun parts & accessories for Sig Sauer. Sometimes you just want a Stock Sig Sauer pistols, replacement recoil spring assembly, accessories, ammunition, gun cleaning supplies. The usual.
Other days you want a standard 9mm Luger 10 round magazine, an IWB holster or even a parts kit to get your gun running again. Then there are accessories, ammunition, conversion kits, grips etc.
Scopes, optics and more are out there too. But a scope on a P365? Man…
Brownells seem to have a constant supply of the simple kits you always need to have lying round. OEM Sig Sauer Sights, Red dot sights, rifle parts, all that.
Brownells – Recoil spring, parts kits and much more for your Sig Nitron.
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This is hands down the best comprehensive accessory guide I’ve found anywhere online for the P 365. Thanks
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