Glock 45 MOS
Compact
Glock MOS Adapter Plate System
Duty / Home Defense/ Range
The Glock 45 MOS combines the compact slide of the Glock 19 with the full-size Glock 17 frame, offering excellent control, capacity, and versatility. The factory MOS system makes mounting popular red dot optics simple, making it a favorite for duty, home defense, and range use.
Full Specs
Manufacturer
Caliber
9mm
Optic Footprint
Glock MOS
Capacity
17
Mounting System
Glock MOS Adapter Plate System
Barrel Length
4.02 in
Overall Length
7.44 in
Best For
Duty / Home Defense/ Range
Width
1.34 in
Optic Ready
Yes
Frame Size
Compact
Weight
24.97 oz
Recommended Optics
🏆 BEST OVERALL
Trijicon RMR Type 2
Battle-proven RMR optic trusted for duty, competition, and defensive use thanks to its legendary durability and reliability.
Specifications
Footprint: RMR
Installation: Direct Fit
Reticle: 1.0 MOA Dot 3.25 MOA Dot 6.5 MOA Dot
Window Size: 0.87″ × 0.63″
Weight: 1.2 oz
Battery: CR2032 (Bottom-Loading)
Battery Life: Up to 50,000 hours
Recommended Use: Duty, Concealed Carry, Home Defense
Housing Material: Forged 7075-T6 Aluminum
Waterproof Rating: 66 ft (20 m)
Brightness Settings: 8 Settings (6 Day / 2 Night Vision) + Automatic Mode
Shake Awake: No
Night Vision Compatible: Yes
Features
Features
Forged 7075-T6 Aluminum Housing
Built from forged aircraft-grade aluminum, the RMR Type 2 is engineered to withstand heavy recoil, impacts, and years of hard use.
Patented Shape for Impact Protection
The distinctive hooded design helps absorb impacts and protects the lens from damage, making it one of the most durable pistol optics available.
Automatic & Manual Brightness Modes
Choose between automatic brightness adjustment or manually select one of eight brightness settings to suit changing lighting conditions.
True-Color Multi-Coated Lens
Premium multi-coated glass provides excellent clarity, reduced glare, and a crisp aiming point with minimal color distortion.
Long Battery Life
Powered by a CR2032 battery, the RMR Type 2 delivers up to 4 years of continuous runtime at a medium brightness setting.
Improved Type 2 Electronics
Updated electronics are designed to better withstand the intense slide acceleration of semi-automatic pistols, reducing flickering under recoil and improving long-term reliability.
Waterproof Construction
Built to perform in harsh environments, the RMR Type 2 is waterproof to 20 meters (66 feet) and designed for dependable operation in adverse weather.
Parallax-Free Design
Engineered to minimize point-of-impact shift regardless of eye position, helping maintain accuracy during rapid shooting.
RMR Footprint Compatibility
Uses the industry-standard RMR footprint, making it compatible with a wide variety of optics-ready pistols and aftermarket slides.
Pros & Cons
Pros
Industry-leading durability
Trusted by military and law enforcement worldwide
Forged 7075-T6 aluminum housing
Excellent optical clarity
Available in multiple dot sizes
Proven reliability on slide-mounted pistols
RMR footprint is widely supported
Outstanding long-term track record
Cons
Bottom-loading battery requires removing the optic for battery replacement
Smaller viewing window than newer optics like the SRO or 507Comp
No Shake Awake or motion activation
More expensive than many comparable open-emitter optics
Open emitter can collect dirt, lint, or moisture
SHOP
Affiliate Disclosure: We may earn a commission from qualifying purchases made through links on this page, at no additional cost to you.
Compatibility Note:
Some pistols require an adapter plate. Always verify your pistol’s optic cut before purchasing.
💰 BEST VALUE
Holosun 508T X2
Premium titanium RMR-footprint optic built for extreme durability without sacrificing speed or battery life.
Specifications
Footprint: RMR
Installation: Direct Fit
Reticle: 2 MOA Dot 32 MOA Circle Circle-Dot (Multi-Reticle System)
Window Size: 0.91″ × 0.63″
Weight: 2.0 oz
Battery: CR1632 (Side-Loading)
Battery Life: Up to 50,000 Hours
Recommended Use: Duty, Competition, Concealed Carry, Home Defense
Housing Material: Grade 5 Titanium
Waterproof Rating: IP67
Brightness Settings: 8 Daylight / 4 Night Vision
Shake Awake: Yes
Night Vision Compatible: Yes
Features
Features
Grade 5 Titanium Housing
Precision-machined from lightweight titanium, the 508T X2 offers exceptional durability and impact resistance for demanding duty and defensive use.
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 application.
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.
Solar Failsafe™
Uses ambient light to supplement battery power and automatically adjusts brightness in changing lighting conditions.
Side-Loading Battery Tray
Replace the CR1632 battery without removing the optic from the slide, helping maintain your zero after battery changes.
Multi-Coated Glass
Premium lenses provide exceptional clarity, excellent light transmission, and a crisp, distortion-free sight picture.
Long Battery Life
Delivers up to 50,000 hours of runtime on a single CR1632 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.
IP67 Waterproof Construction
Sealed against dust and water for dependable performance in rain, harsh environments, and everyday duty use.
RMR Footprint Compatibility
Uses the industry-standard RMR footprint, making it compatible with a wide variety of optics-ready pistols and aftermarket slides.
Pros & Cons
Pros
Extremely durable Grade 5 titanium housing
Multi-Reticle System offers outstanding versatility
Solar Failsafe™ and Shake Awake™ technology
Side-loading battery tray
Up to 50,000-hour battery life
RMR footprint fits many optics-ready pistols
Lock Mode prevents accidental setting changes
Excellent balance of durability and weight
Outstanding choice for duty or defensive use
Cons
More expensive than the 507C X2
Open emitter can collect dirt, lint, or moisture
Heavier than the 507C X2 due to the titanium housing
Smaller viewing window than dedicated competition optics like the SRO or 507Comp
Titanium construction may be more than many casual shooters need
SHOP
Affiliate Disclosure: We may earn a commission from qualifying purchases made through links on this page, at no additional cost to you.
Compatibility Note:
Some pistols require an adapter plate. Always verify your pistol’s optic cut before purchasing.
💎 PREMIUM
Aimpoint ACRO P-2
Fully enclosed duty optic renowned for unmatched reliability, rugged construction, and exceptional battery life.
Specifications
Footprint: ACRO
Installation: Adapter Plate May Be Required
Reticle: 3.5 MOA Red Dot
Window Size: 0.59″ × 0.59″
Weight: 2.2 oz
Battery: CR2032
Battery Life: Up to 50,000 Hours
Recommended Use: Duty, Home Defense
Housing Material: High-Strength Aluminum
Waterproof Rating: 115 ft
Brightness Settings: 6 Daylight / 4 Night Vision
Shake Awake: No
Night Vision Compatible: Yes
Features
Features
Fully Enclosed Emitter Design
The enclosed emitter protects the LED from rain, mud, snow, dust, and debris, ensuring the dot remains visible in the harshest conditions.
50,000-Hour Battery Life
Powered by a CR2032 battery, the ACRO P-2 delivers up to five years of continuous operation on a single battery.
Top-Loading Battery Compartment
The battery can be replaced without removing the optic from the slide, helping maintain your zero after battery changes.
7075-T6 Aluminum Housing
Machined from aircraft-grade aluminum for exceptional durability and designed to withstand heavy recoil, impacts, and hard use.
Large Enclosed Viewing Window
Provides a clear, unobstructed sight picture while protecting the emitter from environmental conditions.
10 Brightness Settings
Includes 4 night vision-compatible settings and 6 daylight settings for excellent visibility in virtually any lighting conditions.
Fully Waterproof Construction
Submersible to 35 meters (115 feet), providing outstanding reliability in rain, water, and extreme environments.
Parallax-Free Design
Designed to minimize point-of-impact shift regardless of eye position, helping maintain accuracy during rapid shooting.
Built for Duty Use
Designed specifically for military, law enforcement, and defensive applications where absolute reliability and durability are critical.
Pros & Cons
Pros
Extremely rugged enclosed-emitter design
Outstanding durability for duty and defensive use
Up to 50,000-hour battery life
Excellent reliability in rain, mud, snow, and dusty environments
High-strength aluminum housing
Top-loading battery compartment
Trusted by military and law enforcement agencies worldwide
Outstanding waterproof performance
Cons
Expensive compared to most pistol optics
Heavier than many open-emitter designs
Smaller viewing window than optics like the SRO or 507Comp
Requires an ACRO-compatible mounting system
No Shake Awake or motion activation feature
SHOP
Affiliate Disclosure: We may earn a commission from qualifying purchases made through links on this page, at no additional cost to you.
Compatibility Note:
Some pistols require an adapter plate. Always verify your pistol’s optic cut before purchasing.
