SIG Sauer P365
Micro
RMSc Direct Mount
Carry/ Home Defense
The SIG P365 revolutionized concealed carry by packing double-stack capacity into a truly micro-compact pistol. Lightweight, easy to conceal, and optics-ready on modern variants, it’s one of the most popular carry guns on the market.
Full Specs
Manufacturer
Caliber
9mm
Optic Footprint
RMSc
Capacity
10
Mounting System
RMSc Direct Mount
Barrel Length
3.10 in
Overall Length
5.80 in
Best For
Carry/ Home Defense
Width
1.00
Optic Ready
Yes
Frame Size
Micro
Weight
17.8 oz
Recommended Optics
Holosun EPS Carry
Closed-emitter RMSc optic built for concealed carry with outstanding durability, excellent battery life, and a crisp, easy-to-acquire reticle.
Specifications
Footprint: Holosun K
Installation: Some RMSc-cut slides may require minor modification or an adapter plate. Most modern RMSc-compatible pistols accept the Holosun K footprint.
Reticle: 2 MOA Dot 32 MOA Circle Circle-Dot (Multi-Reticle System)
Window Size: 0.58″ × 0.77″
Weight: 1.1 oz
Battery: CR1620 (Side-Loading)
Battery Life: Up to 50,000 Hours
Recommended Use: Concealed Carry, Home Defense
Housing Material: 7075-T6 Aluminum
Waterproof Rating: IPX8
Brightness Settings: 10 Daylight / 2 Night Vision
Shake Awake: Yes
Night Vision Compatible: Yes
Features
Features
Fully Enclosed Emitter Design
The enclosed emitter protects the LED from dirt, dust, rain, and lint, ensuring a clear aiming point in virtually any environment.
Multi-Reticle System (MRS)
Choose between a 2 MOA dot, a 32 MOA circle, or the circle-dot combination to match your shooting style and defensive needs.
Shake Awake™ Technology
Automatically powers the optic on when motion is detected and turns it off after a period of inactivity to maximize battery life.
Side-Loading Battery Tray
Replace the CR1620 battery without removing the optic from the slide, helping maintain your zero after battery changes.
7075-T6 Aluminum Housing
Precision-machined from aircraft-grade aluminum for exceptional durability while remaining lightweight enough for everyday carry.
Aspherical Multi-Coated Glass
Premium glass provides outstanding clarity, reduced distortion, and excellent light transmission for a crisp sight picture.
Long Battery Life
Delivers up to 50,000 hours of runtime on a single battery, minimizing maintenance and battery replacements.
12 Brightness Settings
Features 10 daylight and 2 night vision-compatible brightness settings, providing excellent visibility in virtually any lighting condition.
IPX8 Waterproof Construction
Built to withstand heavy rain, water exposure, and demanding environments while maintaining dependable performance.
Pros & Cons
Pros
Fully enclosed emitter protects against dirt, lint, and moisture
Outstanding choice for everyday concealed carry
Multi-Reticle System provides excellent versatility
Durable 7075-T6 aluminum housing
Side-loading battery tray
Up to 50,000-hour battery life
Shake Awake™ technology
Excellent optical clarity
Includes RMSc adapter plate
Cons
More expensive than open-emitter carry optics
Slightly heavier than the 407K and 507K
Uses a smaller CR1620 battery instead of the more common CR1632
Enclosed design is slightly bulkier than open-emitter optics
Compatibility Note: Some pistols require an adapter plate. Always verify your pistol’s optic cut before purchasing.
Holosun 507K X2
Compact RMSc-footprint optic with a multi-reticle system, side-loading battery, and proven reliability for concealed carry pistols.
Specifications
Footprint: Holosun K
Installation: Some RMSc-cut slides may require minor modification or an adapter plate. Most modern RMSc-compatible pistols accept the Holosun K footprint.
Reticle: 2 MOA Dot 32 MOA Circle Circle-Dot (Multi-Reticle System)
Window Size: 0.58″ × 0.77″
Weight: 1.0 oz
Battery: CR1632 (Side-Loading)
Battery Life: Up to 50,000 Hours
Recommended Use: Concealed Carry, Home Defense
Housing Material: 7075-T6 Aluminum
Waterproof Rating: IP67
Brightness Settings: 10 Daylight / 2 Night Vision
Shake Awake: Yes
Night Vision Compatible: Yes
Features
Features
Multi-Reticle System (MRS)
Choose between a 2 MOA dot, a 32 MOA circle, or the circle-dot combination to match your shooting style and defensive needs.
Shake Awake™ Technology
Automatically powers the optic on when motion is detected and turns it off after a period of inactivity to maximize battery life.
Side-Loading Battery Tray
Replace the CR1632 battery without removing the optic from the slide, helping maintain your zero after battery changes.
7075-T6 Aluminum Housing
Precision-machined from aircraft-grade aluminum to provide exceptional durability while remaining lightweight for everyday carry.
Multi-Coated Glass
Premium lenses provide a bright, crisp sight picture with excellent light transmission and reduced glare.
12 Brightness Settings
Features 10 daylight and 2 night vision-compatible brightness settings for excellent visibility in virtually any lighting condition.
Long Battery Life
Provides up to 50,000 hours of runtime on a single CR1632 battery, reducing the need for frequent battery replacements.
IP67 Waterproof Construction
Sealed against dust and water for dependable performance in rain, harsh environments, and everyday carry.
K-Series Footprint
Designed for the Holosun K footprint, making it compatible with many popular micro-compact pistols such as the SIG P365, Springfield Hellcat, Glock 43X MOS, and Glock 48 MOS (with the appropriate mounting configuration where required).
Pros & Cons
Pros
Multi-Reticle System provides excellent versatility
Outstanding value for a premium carry optic
Durable 7075-T6 aluminum housing
Side-loading battery tray
Up to 50,000-hour battery life
Shake Awake™ technology
Compact and lightweight for concealed carry
K footprint fits many popular micro-compact pistols
Lock Mode prevents accidental brightness changes during carry
Cons
Open emitter can collect lint, dirt, or moisture
Smaller viewing window than full-size pistol optics
No Solar Failsafe feature
More expensive than the 407K X2
K footprint may require an adapter plate on some pistols
Compatibility Note: Some pistols require an adapter plate. Always verify your pistol’s optic cut before purchasing.
SIG SAUER ROMEO-X Compact
Premium enclosed-ready carry optic featuring a durable aluminum housing, crisp reticle, and excellent everyday performance.
Specifications
Footprint: RMSc
Installation: Direct Fit
Reticle: 3 MOA Dot 6 MOA Dot Circle Dot (2 MOA Dot / 32 MOA Circle)
Window Size: 24 mm Aperture
Weight: 1.0 oz
Battery: CR1632
Battery Life: Up to 20,000 Hours
Recommended Use: Concealed Carry, Home Defense
Housing Material: 7075-T6 Aluminum
Waterproof Rating: IPX7
Brightness Settings: 12 Day / 3 Night Vision
Shake Awake: Yes
Night Vision Compatible: Yes
Features
Features
Compact Open-Emitter Design
Designed specifically for concealed carry pistols, the ROMEO-X Compact offers a lightweight, low-profile package without sacrificing durability or performance.
Ultra-Low Deck Height
The low mounting height allows many compatible pistols to retain factory-height iron sights for an effective co-witness without requiring suppressor-height sights.
Direct-Mount Compatibility
Designed to fit pistols with the SIG SAUER PRO footprint, eliminating the need for adapter plates on compatible firearms like the P365 series.
CNC-Machined 7075 Aluminum Housing
Constructed from aircraft-grade aluminum to provide exceptional strength while remaining lightweight enough for everyday carry.
Aspherical Glass Lens
Premium distortion-free glass delivers a crisp, clear sight picture with excellent edge-to-edge clarity.
Side-Loading Battery Tray
Replace the CR1632 battery without removing the optic from the slide, helping maintain your zero after battery changes.
MOTAC™ Motion Activation
Automatically powers the optic on when movement is detected and turns it off after inactivity to maximize battery life.
15 Brightness Settings
Features multiple daylight brightness levels along with dedicated night vision settings, allowing the optic to perform in virtually any lighting condition.
Dependable Weather Resistance
Built to withstand rain, dust, recoil, and harsh everyday carry conditions while maintaining reliable performance.
Pros & Cons
Pros
Excellent glass clarity with minimal distortion
Ultra-low deck height allows standard-height iron sight co-witness
Premium 7075-T6 aluminum construction
Side-loading battery tray
MOTAC™ motion activation
Direct RMSc footprint for many micro-compact pistols
Made in the USA
Easy-to-use controls and premium fit and finish
Cons
More expensive than many competing micro optics
Open emitter is more susceptible to dirt and debris than enclosed optics
Battery life is shorter than some Holosun models
Fewer aftermarket mounting options than the Holosun K footprint
Compatibility Note: Some pistols require an adapter plate. Always verify your pistol’s optic cut before purchasing.
