[Tom73]

XMacro Comp has 3.1. Standard XMacro has 3.7.

 

[Kos1]

Ok, I didn't know that. You need a scorecard to keep up with all the models

Yes. Hence this thread. Sig has a way to continue evolving each platform.

 

[Cement Pro]

XMacro Comp has 3.1. Standard XMacro has 3.7.

These numbers are also applicable to the spectre comp and standard XL (3.1” barrel and 3.7” barrel, respectively)

 

[DANGEROUS DAVE]

If I may add one more point of clarification to this already excellent thread, while the slides are interchangeable between the 9 mm and the 380 versions, it definitely must be done as an assembly, since the barrels are completely different. The 380 barrel is almost paper thin as compared to the 9 mm barrel, so while the ID may be roughly the same, the OD is completely different. The recoil rod/ spring assembly is also completely different between the two.

 

[jesse.liles]

Great info! Thanks to all that have shared.

 

[tmcleary]

I am about to venture into the modification world for my 365. I am very happy to have found this thread. GREAT info.

 

[Weekendwarrior]

I am about to venture into the modification world for my 365. I am very happy to have found this thread. GREAT info.

Same here... keep us posted as I am in learning/sponge mode. Bought the wife the 380 Rose and myself the Macro comp and the Spectre Comp. I have one DPM recoil kit and one True Precision barrel arriving tomorrow. Thinking of upgrading one of the guns so I can notice the changes and then decide if if there is a better route for the 2nd build. Do you have any plans already in play?

 

[Redline8k]

Yes helped me for sure!! thanks all for contributing!

 

[Thinkcentipede]

Sig marketing doesn't seem to have any problem changing/adding designations when releasing new models which makes tracking what is what complicated.

Currently... there are 4 grips:

• standard - proprietary rail, 10 rd flush mags
• X - proprietary rail, 12 rd flush mags
• Macro - 1913 rail, 17rd flush-ish mags
• AXG Legion - aluminum, g10 scales, 1913 rail, 17rd mags
  • slight difference in 1913 rail affects XMacro holster compatibility

and 2 barrel lengths:

• 3.1"
• 3.7"

and 4 slides (more if you count the optic plate variations):

• original ('short'): takes 3.1" barrel and uses a double spring RSA
  • revised for the 365X to include an optic plate
  • SAS slide is ported and has different slide release and sights
• L ('long'): takes 3.7" barrel and uses a single spring RSA
  • original L slide has the rear sight included in the optic plate
    • usually these are marked 'XL'
  • revised L slide has the rear sight separate from the optic plate
• Spectre/Macro Comp: 3.1" barrel in 3.7" slide with integral comp using the single spring RSA, optic ready
  • 'comp' slides have suppressor height sights (usually)
  • 'comp' slides are dimensionally identical to the L slide and fit the same holsters
• 380: lightened 3.1" slide using a 380-specific barrel and double spring RSA, optic ready

The various released models mix and match the slides and grips:

• 365: standard grip and 3.1" slide/barrel
• 365 SAS: standard grip and 3.1" slide/barrel (with special porting, controls and sights)
• 365 XL: X grip and 3.7" barrel and one of the 3.7" optic-ready L slides
• 365 X: X grip and 3.1" barrel and the 3.1" optic-ready slide
• 365 XL Spectre: X grip and 3.7" L slide
  • slide has cosmetic differences: serrations, cut outs, distressed finish
• 365 XL SpectreComp: X grip and 3.7" comp'ed slide
  • cosmetics: gold TiN controls, 'Sig Custom Works' engraved slide
  • laser stippled grip
• 365-380: standard grip with 380 barrel and slide
• 365 XMacro(Comp): macro grip and 3.7" comp'ed slide
  • released as the XMacro but called XMacroComp after the TacOps was released
• 365 XMacro TacOps: macro grip and 3.7" non-comp L slide
• 365 AXG Legion: AXG grip and 3.7" comp slide

So, the model decoder (up to this point) is:

• 'X' designates 12rd grip, flat trigger and optic ready slide
• 'L' designates the 3.7" barrel and slide
• 'Macro' designates the 17rd grip module
• 'Comp' designates the 3.1" barrel and optic ready integral comp slide
• 'MS' in the SKU indicates a factory installed manual safety
• 'SAS' (Sig Anti Snag) has a unique fibre optic sight, minimized controls and a ported barrel/slide
  • the ported barrel was phased out relatively quickly
• 'Rose' designates rose-colored TiN controls and packaging applied to regular models
• 'TacOps' package includes extra mags (more than the standard 2)
• 'TacPac' includes extra mags and a holster
• 'AXG Legion' uses an aluminum grip module with Legion graphics, challenge coin

Magazines

• capacities
  • 10 rd (9mm or .380)
  • 12 rd (9mm or .380)
  • 15 rd - discontinued after 17rd mag was released
  • 17 rd
• 365-380 mag differences
  • marked with '.380' instead of '9mm'
  • have a plastic spacer inside the spring coils
  • have slightly different feed lips
  • 9mm mags can be used with 365-380s
    • not supported by Sig but those who have tried reported success
  • .380 mags can be used for 9mm if the plastic spacer in the spring coil is removed
    • again, not supported but works

+2 kits (flat spring + baseplate) are available for the 10, 12 and 15 rd mag bodies:​

MagGuts +2 kits (works with 9mm and .380 mag bodies)​

​

+2/+3 kits are available for the 17 rd body​

Taran Tactical +3 kit​

Generally speaking

• 365 FCUs may be fitted with the optional manual safety
  • the FCU requires a grip module with safety cutouts if the safety is installed
  • the required safety cutouts are marked on Sig grip modules
    • jigs are also available
  • XMacro grips, being slightly wider, may need additional relief for the safety levers
• 365 FCUs fit any grip module
  • the FCU is available separately, as a standalone component, in gold TiN or plain black (nitride, not TiN)
• 365 slides are interchangeable
  • meaning a complete slide assembly will work on any FCU/grip
    • for example taking the 365X slide and using it on a XMacro grip+FCU
  • not all barrels are compatible with all slides
    • 365-380 3.1" barrel only works in the 365-380 slide
    • 3.7" barrel works in the 3.7" non-comp 'L' slide
      • also works in the short slide - like a threaded barrel with no threads
    • 3.1" barrel does not work in the 3.7" non-comp 'L' slide
• longer mags work in shorter grips
  • spacers are available to fill the gap between base plate and pistol grip
  • base plates are available for (some) shorter mags so they work in longer grips
• holster compatibility is determined by overall slide length and type of rail

Thanks for the detailed explanation. That really helps.

 

[Cement Pro]

Sig marketing doesn't seem to have any problem changing/adding designations when releasing new models which makes tracking what is what complicated.

Currently... there are 4 grips:

• standard - proprietary rail, 10 rd flush mags
• X - proprietary rail, 12 rd flush mags
• Macro - 1913 rail, 17rd flush-ish mags
• AXG Legion - aluminum, g10 scales, 1913 rail, 17rd mags
  • slight difference in 1913 rail affects XMacro holster compatibility

and 2 barrel lengths:

• 3.1"
• 3.7"

and 4 slides (more if you count the optic plate variations):

• original ('short'): takes 3.1" barrel and uses a double spring RSA
  • revised for the 365X to include an optic plate
  • SAS slide is ported and has different slide release and sights
• L ('long'): takes 3.7" barrel and uses a single spring RSA
  • original L slide has the rear sight included in the optic plate
    • usually these are marked 'XL'
  • revised L slide has the rear sight separate from the optic plate
• Spectre/Macro Comp: 3.1" barrel in 3.7" slide with integral comp using the single spring RSA, optic ready
  • 'comp' slides have suppressor height sights (usually)
  • 'comp' slides are dimensionally identical to the L slide and fit the same holsters
• 380: lightened 3.1" slide using a 380-specific barrel and double spring RSA, optic ready

The various released models mix and match the slides and grips:

• 365: standard grip and 3.1" slide/barrel
• 365 SAS: standard grip and 3.1" slide/barrel (with special porting, controls and sights)
• 365 XL: X grip and 3.7" barrel and one of the 3.7" optic-ready L slides
• 365 X: X grip and 3.1" barrel and the 3.1" optic-ready slide
• 365 XL Spectre: X grip and 3.7" L slide
  • slide has cosmetic differences: serrations, cut outs, distressed finish
• 365 XL SpectreComp: X grip and 3.7" comp'ed slide
  • cosmetics: gold TiN controls, 'Sig Custom Works' engraved slide
  • laser stippled grip
• 365-380: standard grip with 380 barrel and slide
• 365 XMacro(Comp): macro grip and 3.7" comp'ed slide
  • released as the XMacro but called XMacroComp after the TacOps was released
• 365 XMacro TacOps: macro grip and 3.7" non-comp L slide
• 365 AXG Legion: AXG grip and 3.7" comp slide

So, the model decoder (up to this point) is:

• 'X' designates 12rd grip, flat trigger and optic ready slide
• 'L' designates the 3.7" barrel and slide
• 'Macro' designates the 17rd grip module
• 'Comp' designates the 3.1" barrel and optic ready integral comp slide
• 'MS' in the SKU indicates a factory installed manual safety
• 'SAS' (Sig Anti Snag) has a unique fibre optic sight, minimized controls and a ported barrel/slide
  • the ported barrel was phased out relatively quickly
• 'Rose' designates rose-colored TiN controls and packaging applied to regular models
• 'TacOps' package includes extra mags (more than the standard 2)
• 'TacPac' includes extra mags and a holster
• 'AXG Legion' uses an aluminum grip module with Legion graphics, challenge coin

Magazines

• capacities
  • 10 rd (9mm or .380)
  • 12 rd (9mm or .380)
  • 15 rd - discontinued after 17rd mag was released
  • 17 rd
• 365-380 mag differences
  • marked with '.380' instead of '9mm'
  • have a plastic spacer inside the spring coils
  • have slightly different feed lips
  • 9mm mags can be used with 365-380s
    • not supported by Sig but those who have tried reported success
  • .380 mags can be used for 9mm if the plastic spacer in the spring coil is removed
    • again, not supported but works

+2 kits (flat spring + baseplate) are available for the 10, 12 and 15 rd mag bodies:​

MagGuts +2 kits (works with 9mm and .380 mag bodies)​

​

+2/+3 kits are available for the 17 rd body​

Taran Tactical +3 kit​

Generally speaking

• 365 FCUs may be fitted with the optional manual safety
  • the FCU requires a grip module with safety cutouts if the safety is installed
  • the required safety cutouts are marked on Sig grip modules
    • jigs are also available
  • XMacro grips, being slightly wider, may need additional relief for the safety levers
• 365 FCUs fit any grip module
  • the FCU is available separately, as a standalone component, in gold TiN or plain black (nitride, not TiN)
• 365 slides are interchangeable
  • meaning a complete slide assembly will work on any FCU/grip
    • for example taking the 365X slide and using it on a XMacro grip+FCU
  • not all barrels are compatible with all slides
    • 365-380 3.1" barrel only works in the 365-380 slide
    • 3.7" barrel works in the 3.7" non-comp 'L' slide
      • also works in the short slide - like a threaded barrel with no threads
    • 3.1" barrel does not work in the 3.7" non-comp 'L' slide
• longer mags work in shorter grips
  • spacers are available to fill the gap between base plate and pistol grip
    • short grip
    • X/XL grip
  • base plates are available for shorter mags so they work in longer grips
    • X/XL grip (10rd)
    • XMacro grip (10rd, 12rd, 15rd)
• holster compatibility is determined by overall slide length and type of rail

@alaw2603
peep this post - lots of useful information to give you a better idea of what to pick

 

[wxl]

Will 17 round macro mag fit the X?

 

[distrflman]

Yes, longer mags fit in the shorter grips. Most if bought as stand alone will have the plastic spacers.

On another note I had someone tell me the fcu in the legions only fits the legion frame. Lots of mis information out there.

 

[daves1]

Sig marketing doesn't seem to have any problem changing/adding designations when releasing new models which makes tracking what is what complicated.

Currently... there are 4 grips:

• standard - proprietary rail, 10 rd flush mags
• X - proprietary rail, 12 rd flush mags
• Macro - 1913 rail, 17rd flush-ish mags
• AXG Legion - aluminum, g10 scales, 1913 rail, 17rd mags
  • slight difference in 1913 rail affects XMacro holster compatibility

and 2 barrel lengths:

• 3.1"
• 3.7"

and 4 slides (more if you count the optic plate variations):

• original ('short'): takes 3.1" barrel and uses a double spring RSA
  • revised for the 365X to include an optic plate
  • SAS slide is ported and has different slide release and sights
• L ('long'): takes 3.7" barrel and uses a single spring RSA
  • original L slide has the rear sight included in the optic plate
    • usually these are marked 'XL'
  • revised L slide has the rear sight separate from the optic plate
• Spectre/Macro Comp: 3.1" barrel in 3.7" slide with integral comp using the single spring RSA, optic ready
  • 'comp' slides have suppressor height sights (usually)
  • 'comp' slides are dimensionally identical to the L slide and fit the same holsters
• 380: lightened 3.1" slide using a 380-specific barrel and double spring RSA, optic ready

The various released models mix and match the slides and grips:

• 365: standard grip and 3.1" slide/barrel
• 365 SAS: standard grip and 3.1" slide/barrel (with special porting, controls and sights)
• 365 XL: X grip and 3.7" barrel and one of the 3.7" optic-ready L slides
• 365 X: X grip and 3.1" barrel and the 3.1" optic-ready slide
• 365 XL Spectre: X grip and 3.7" L slide
  • slide has cosmetic differences: serrations, cut outs, distressed finish
• 365 XL SpectreComp: X grip and 3.7" comp'ed slide
  • cosmetics: gold TiN controls, 'Sig Custom Works' engraved slide
  • laser stippled grip
• 365-380: standard grip with 380 barrel and slide
• 365 XMacro(Comp): macro grip and 3.7" comp'ed slide
  • released as the XMacro but called XMacroComp after the TacOps was released
• 365 XMacro TacOps: macro grip and 3.7" non-comp L slide
• 365 AXG Legion: AXG grip and 3.7" comp slide

So, the model decoder (up to this point) is:

• 'X' designates 12rd grip, flat trigger and optic ready slide
• 'L' designates the 3.7" barrel and slide
• 'Macro' designates the 17rd grip module
• 'Comp' designates the 3.1" barrel and optic ready integral comp slide
• 'MS' in the SKU indicates a factory installed manual safety
• 'SAS' (Sig Anti Snag) has a unique fibre optic sight, minimized controls and a ported barrel/slide
  • the ported barrel was phased out relatively quickly
• 'Rose' designates rose-colored TiN controls and packaging applied to regular models
• 'TacOps' package includes extra mags (more than the standard 2)
• 'TacPac' includes extra mags and a holster
• 'AXG Legion' uses an aluminum grip module with Legion graphics, challenge coin

Magazines

• capacities
  • 10 rd (9mm or .380)
  • 12 rd (9mm or .380)
  • 15 rd - discontinued after 17rd mag was released
  • 17 rd
• 365-380 mag differences
  • marked with '.380' instead of '9mm'
  • have a plastic spacer inside the spring coils
  • have slightly different feed lips
  • 9mm mags can be used with 365-380s
    • not supported by Sig but those who have tried reported success
  • .380 mags can be used for 9mm if the plastic spacer in the spring coil is removed
    • again, not supported but works

+2 kits (flat spring + baseplate) are available for the 10, 12 and 15 rd mag bodies:​

MagGuts +2 kits (works with 9mm and .380 mag bodies)​

​

+2/+3 kits are available for the 17 rd body​

Taran Tactical +3 kit​

Generally speaking

• 365 FCUs may be fitted with the optional manual safety
  • the FCU requires a grip module with safety cutouts if the safety is installed
  • the required safety cutouts are marked on Sig grip modules
    • jigs are also available
  • XMacro grips, being slightly wider, may need additional relief for the safety levers
• 365 FCUs fit any grip module
  • the FCU is available separately, as a standalone component, in gold TiN or plain black (nitride, not TiN)
• 365 slides are interchangeable
  • meaning a complete slide assembly will work on any FCU/grip
    • for example taking the 365X slide and using it on a XMacro grip+FCU
  • not all barrels are compatible with all slides
    • 365-380 3.1" barrel only works in the 365-380 slide
    • 3.7" barrel works in the 3.7" non-comp 'L' slide
      • also works in the short slide - like a threaded barrel with no threads
    • 3.1" barrel does not work in the 3.7" non-comp 'L' slide
• longer mags work in shorter grips
  • spacers are available to fill the gap between base plate and pistol grip
    • short grip
    • X/XL grip
  • base plates are available for shorter mags so they work in longer grips
    • X/XL grip (10rd)
    • XMacro grip (10rd, 12rd, 15rd)
• holster compatibility is determined by overall slide length and type of rail

AA++! Great info!

 

[AIRB0RNE6176]

Followed for knowledge and insight on the multitude of P365 models. Still waiting on an even "thinner" single-stack version...

 

[BearBio]

Thanks!!! This has been a REAL assist.
Question: adding optical sights: What's available? My wife and I both EDC with a "standard" P-365 and she may want a red dot.

 

[RDS40]

Sig marketing doesn't seem to have any problem changing/adding designations when releasing new models which makes tracking what is what complicated.

Currently... there are 4 grips:

• standard - proprietary rail, 10 rd flush mags
• X - proprietary rail, 12 rd flush mags
• Macro - 1913 rail, 17rd flush-ish mags
• AXG Legion - aluminum, g10 scales, 1913 rail, 17rd mags
  • slight difference in 1913 rail affects XMacro holster compatibility

and 3 barrel lengths:

• 3.1"
• 3.7"
• 4.3"

and 5 slides (more if you count the optic plate variations):

• original ('short'): takes 3.1" barrel and uses a double spring RSA
  • revised for the 365X to include an optic plate
  • SAS slide is ported and has different slide release and sights
• L ('long'): takes 3.7" barrel and uses a single spring RSA
  • original L slide has the rear sight included in the optic plate
    • usually these are marked 'XL'
  • revised L slide has the rear sight separate from the optic plate
• Spectre/Macro Comp: 3.1" barrel in 3.7" slide with integral comp using the single spring RSA, optic ready
  • 'comp' slides have suppressor height sights (usually)
  • 'comp' slides are dimensionally identical to the L slide and fit the same holsters
• 380: lightened 3.1" slide using a 380-specific barrel and double spring RSA, optic ready
• FUSE: long slide using the 4.3" barrel and longer, single-spring RSA, optic ready.

The various released models mix and match the slides and grips:

• 365: standard grip and 3.1" slide/barrel
• 365 SAS: standard grip and 3.1" slide/barrel (with special porting, controls and sights)
• 365 XL: X grip and 3.7" barrel and one of the 3.7" optic-ready L slides
• 365 X: X grip and 3.1" barrel and the 3.1" optic-ready slide
• 365 XL Spectre: X grip and 3.7" L slide
  • slide has cosmetic differences: serrations, cut outs, distressed finish
• 365 XL SpectreComp: X grip and 3.7" comp'ed slide
  • cosmetics: gold TiN controls, 'Sig Custom Works' engraved slide
  • laser stippled grip
• 365-380: standard grip with 380 barrel and slide
• 365 XMacro(Comp): macro grip and 3.7" comp'ed slide
  • released as the XMacro but called XMacroComp after the TacOps was released
• 365 XMacro TacOps: macro grip and 3.7" non-comp L slide
• 365 AXG Legion: AXG grip and 3.7" comp slide
• 365 FUSE: XMacro grip and 4.3" slide/barrel/RSA
  • one 17rd and two 21rd mags

So, the model decoder (up to this point) is:

• 'X' designates 12rd grip, flat trigger and optic ready slide
• 'L' designates the 3.7" barrel and slide
• 'Macro' designates the 17rd grip module
• 'Comp' designates the 3.1" barrel and optic ready integral comp slide
• 'MS' in the SKU indicates a factory installed manual safety
• 'SAS' (Sig Anti Snag) has a unique fibre optic sight, minimized controls and a ported barrel/slide
  • the ported barrel was phased out relatively quickly
• 'Rose' designates rose-colored TiN controls and packaging applied to regular models
• 'TacOps' package includes extra mags (more than the standard 2)
• 'TacPac' includes extra mags and a holster
• 'AXG Legion' uses an aluminum grip module with Legion graphics, challenge coin
• 'FUSE' currently indicates the long 4.3" barrel/slide on the XMacro grip

Magazines

• capacities
  • 10 rd (9mm or .380)
  • 12 rd (9mm or .380)
  • 15 rd - discontinued after 17rd mag was released
  • 17 rd
  • 21 rd - extra capacityfrom a longer magazine body not an extended base plate
• 365-380 mag differences
  • marked with '.380' instead of '9mm'
  • have a plastic spacer inside the spring coils
  • have slightly different feed lips
  • 9mm mags can be used with 365-380s
    • not supported by Sig but those who have tried reported success
  • .380 mags can be used for 9mm if the plastic spacer in the spring coil is removed
    • again, not supported but works

+2 kits (flat spring + baseplate) are available for the 10, 12 and 15 rd mag bodies:​

MagGuts +2 kits (works with 9mm and .380 mag bodies)​

​

+2/+3 kits are available for the 17 rd body​

Taran Tactical +3 kit​

Generally speaking

• 365 FCUs may be fitted with the optional manual safety
  • the FCU requires a grip module with safety cutouts if the safety is installed
  • the required safety cutouts are marked on Sig grip modules
    • jigs are also available
  • XMacro grips, being slightly wider, may need additional relief for the safety levers
• 365 FCUs fit any grip module
  • the FCU is available separately, as a standalone component, in gold TiN or plain black (nitride, not TiN)
• 365 slides are interchangeable
  • meaning a complete slide assembly will work on any FCU/grip
    • for example taking the 365X slide and using it on a XMacro grip+FCU
  • not all barrels are compatible with all slides
    • 365-380 3.1" barrel only works in the 365-380 slide
    • 3.7" barrel works in the 3.7" non-comp 'L' slide
      • also works in the short slide - like a threaded barrel with no threads
    • 3.1" barrel does not work in the 3.7" non-comp 'L' slide
• longer mags work in shorter grips
  • spacers are available to fill the gap between base plate and pistol grip
    • short grip
    • X/XL grip
  • base plates are available for shorter mags so they work in longer grips
    • X/XL grip (10rd)
    • XMacro grip (10rd, 12rd, 15rd)
• holster compatibility is determined by overall slide length and type of rail

Great review. Very comprehensive.

 

[Rich Jenkins]

Question: adding optical sights: What's available? My wife and I both EDC with a "standard" P-365 and she may want a red dot.

Below is a list of optical sights to the Shield Reflex Mini Sight/Compact (RMSc) footprint/mounting standard that will fit directly to any P365 optic ready slide.

This list isn't exhaustive; if you are shopping for a sight, check if it mentions "RMSc" footprint, and you should be good to go.

Sig Romeo Zero
Sig Romeo Zero Elite
Sig Romeo X Compact
Holosun 407k/507k
Holosun EPS Carry*
Jpoint
Shield RMSc
Swampfox Sentinel
Springfield Armory Hex Wasp
Vortex Defender CCW
Vector Optics Frenzy

*The Holosun EPS will fit also, but it's more of a double stack optic width, and will overhang a bit on a P365 slide.

 

[BearBio]

Below is a list of optical sights to the Shield Reflex Mini Sight/Compact (RMSc) footprint/mounting standard that will fit directly to any P365 optic ready slide.

This list isn't exhaustive; if you are shopping for a sight, check if it mentions "RMSc" footprint, and you should be good to go.

Sig Romeo Zero
Sig Romeo Zero Elite
Sig Romeo X Compact
Holosun 407k/507k
Holosun EPS Carry*
Jpoint
Shield RMSc
Swampfox Sentinel
Springfield Armory Hex Wasp
Vortex Defender CCW
Vector Optics Frenzy

*The Holosun EPS will fit also, but it's more of a double stack optic width, and will overhang a bit on a P365 slide.

Thanks!!

 

[ImMikeLowry]

I wish I would’ve found this detailed description before I purchased my standard P365! I wanted something smaller than my Canik TP9 SC elite to EDC. Didn’t realize I could’ve purchased the X or the XL and gotten increased mag capacity right out the box. I ended up buying the 12 round mags plus the X frame from Sig also.

 

[darlinboy]

The Sig options can be overwhelming so pre-purchase independent research or a truly customer focused salesperson is essential. The good news, and it sounds that you have already discovered it, is that whatever you bought can generally be reconfigured - at a price of course.