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SIG SAUER P320-XFIVE SXG
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What the compatibility labels mean
How we knowHow we check compatibility
- Lab testedFit checked by Firearm Lab for the recorded setup.
- Documented fitmentSupported by manufacturer, partner, or reviewed community evidence.
- Interface matchMounting details match, but this exact model and part have not been confirmed to fit together.
Check your exact model and part before ordering. Fitment limits
Model details
Manufacturer
SIG SAUER
Model & version
P320-XFIVE SXG · XFIVE SXG
Mounting details
Leupold DeltaPoint Pro, MIL-STD-1913 Picatinny, SIG SAUER P320 PRO optic cut (ROMEO1PRO / DPP pattern, P320 / M17 / M18 / AXG slides)
Compatibility records
150
Lights & rail fitment
Optics & footprint adapters
Optics
25 listed- Bushnell
RXS-100 Reflex Sight
Interface match - EOTech
EFLX CE Pistol Optic
Interface match - Holosun
SCS-320
Part no. SCS-320-GRInterface match - Leupold
DeltaPoint Pro
Interface match
Optic Plates
19 listed- C&H Precision
SIG P320 Legion (M17 / M18) w/ R1P/DPP Cut to Trijicon RMR / RMR HD / SRO / Holosun 407C / 507C / 507Comp / 508T / C&H EDC-XL / COMP / COMP MAX / Olight Osight X w/ Dovetail for GLOCK compatible sights
Interface match - Springer Precision
Optic Mount for Sig Sauer P320 Pro Cut Slides
Interface match - C&H Precision
SIG P320 Legion (M17 / M18) w/ R1P/DPP Cut to Trijicon RMR / SRO / RCR / Holosun 407C / 507C / 507Comp / 508T / C&H EDC-XL / COMP / COMP MAX / Olight Osight X w/ Dovetail for GLOCK compatible sights STEEL
Interface match - C&H Precision
SIG P320 Legion (X-FIVE / M17 / M18) w/ R1P/DPP Cut to Trijicon RMR / RMR HD / SRO / Holosun 407C / 507C / 507Comp / 508T / C&H EDC-XL / COMP / COMP MAX / Olight Osight X w/ 10-8 Rear Sight
Interface match
Sights
Sights
18 listed- Meprolight
MEPRO FT BULLSEYE FRONT
Manufacturer documented - Night Fision
OPTICS READY STEALTH SERIES FOR SIG SAUER
Manufacturer documented - SIG SAUER
REAR ADJUSTABLE SIGHT ASSEMBLY, P320X5
Manufacturer documented - Night Fision
SUPPRESSOR HEIGHT SIGHTS FOR SIG SAUER
Manufacturer documented
Grip & magwells
Magwells
5 listed- Align Tactical
P320 X-Universal 10-30 Magwell
Manufacturer documented - LOK Grips
Sig Sauer P320 AXG | SXG Magwell - Aluminum
Source needs review - Springer Precision
ESP/Duty Magwell for Sig Sauer P320 AXG/SXG
Source needs review - LOK Grips
Sig Sauer P320 AXG | SXG Magwell - Brass
Source needs review
Base Pads
6 listed- Armory Craft
SIG P320 / P385 / P211 GTO 9mm / 40 S&W, PLUS-0 Base Pads
Manufacturer documented - LOK Grips
Sig Sauer P320 | P211 | P385 Magazine Base Pads Aluminum +0
Part no. SS320AXGBPA+0Manufacturer documented - NDZ Performance
NDZ Magazine Floor Base Plate for Sig Sauer P320 P250 9mm .357 .40 Cerakote Burnt Bronze
Manufacturer documented - LOK Grips
Sig Sauer P320 | P211 Magazine Base Pads Brass +0
Part no. SS320AXGBPB+0Manufacturer documented
Magazines
2 listed- Amend2
A2-320 17-Round
Manufacturer documented - SIG SAUER
P320-XFIVE LEGION 9MM 17RD MAGAZINE
Manufacturer documented
Triggers & internals
Triggers
9 listed- Agency Arms
SIG P320 COMPATIBLE DROP IN TRIGGER
Manufacturer documented - Grayguns
P320 Adjustable Hybrid Trigger
Manufacturer documented - Tactical Triggers
Sig Sauer P320 Trigger Kit
Manufacturer documented - Agency Arms
TITANIUM SIG P320 COMPATIBLE DROP IN TRIGGER
Part no. DIT-P320-TIManufacturer documented
Takedown levers
1 listedBarrels & comps
Categories with no listings (8)
About the SIG SAUER P320-XFIVE SXG
SIG SAUER P320 XFIVE SXG — 9mm, per the manufacturer product page (2026-07-31).
- Type
- Pistol
- Manufacturer
- SIG SAUER
- Model & version
- P320-XFIVE SXG · XFIVE SXG
- Caliber
- 9mm
- Mounting details
- Leupold DeltaPoint Pro, MIL-STD-1913 Picatinny, SIG SAUER P320 PRO optic cut (ROMEO1PRO / DPP pattern, P320 / M17 / M18 / AXG slides)
- Width
- 1.6"
- Height
- 5.8"
- Weight
- 49.8 oz
- Barrel length
- 5"
- Overall length
- 8.5"