Glock 34 MOS
Full
Glock MOS Adapter Plate System
Duty / Range
The Glock 34 Gen 5 MOS is a long-slide 9mm built for speed and precision. Its extended barrel and slide provide a longer sight radius and softer recoil impulse, making it a favorite among competition shooters while still serving well for 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
5.31 in
Overall Length
8.82 in
Best For
Duty / Range
Width
1.34 in
Optic Ready
Yes
Frame Size
Full
Weight
25.95 oz
Recommended Optics
🏆 BEST OVERALL
Holosun 507 Comp
A competition-focused red dot with an oversized window built for fast target acquisition and transitions.
Specifications
Footprint: RMR
Installation: Direct Fit
Reticle: Competition Reticle System (CRS) 2 MOA Dot 8 MOA Circle 20 MOA Circle 32 MOA Circle
Window Size: 1.1″ × 0.87″
Weight: 1.7
Battery: CR1632 (Side-Loading)
Battery Life: Up to 50,000 Hours
Recommended Use: Competition, Home Defense, Range
Housing Material: 7075-T6 Aluminum
Waterproof Rating: IP67
Brightness Settings: 8 Daylight / 4 Night Vision
Shake Awake: Yes
Night Vision Compatible: Yes
Features
Features
Competition Multi-Reticle System (MRS)
Choose from multiple reticle options, including a 2 MOA dot, 8 MOA circle, 20 MOA circle, 32 MOA circle, or the full circle-dot combination to match your shooting style.
Large Competition Window
The oversized viewing window provides an expanded field of view, making it easier to track the dot during rapid fire and transitions between targets.
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.
7075-T6 Aluminum Housing
Precision-machined from aircraft-grade aluminum to provide excellent durability while remaining lightweight.
Multi-Coated Glass
High-quality lenses provide a bright, clear sight picture with excellent light transmission and reduced glare.
12 Brightness Settings
Features 10 daylight and 2 night vision-compatible brightness settings for optimal visibility in a wide range of lighting conditions.
IP67 Waterproof Construction
Sealed to resist dust, rain, and temporary water immersion for dependable performance in demanding environments.
Pros & Cons
Pros
Large competition-sized viewing window for exceptional dot tracking
Competition Reticle System (CRS) with multiple reticle options
Excellent value compared to other competition optics
Crisp, bright reticle with 8 daylight and 4 night vision settings
Side-loading battery allows battery changes without losing zero
Shake Awake™ technology extends battery life
Durable 7075-T6 aluminum housing
RMR footprint fits many optics-ready pistols
Lock Mode prevents accidental brightness changes during competition
Cons
Larger size makes it less ideal for concealed carry
Open emitter can collect dirt, lint, or moisture
No Solar Failsafe feature
Competition-focused design is less suited for hard-duty use than optics like the RMR or ACRO P-2
Large window can be more susceptible to impact damage than smaller enclosed optics
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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
Vortex Defender-XL
A competition-focused red dot with an oversized window built for fast target acquisition and transitions.
Specifications
Footprint: DPP
Installation: Varies by Pistol
Reticle: 5 MOA or 8 MOA Red Dot
Window Size: 1.00″ × 0.92″
Weight: 1.93 oz
Battery: CR2032
Battery Life: Up to 25,000 hours
Recommended Use: Competition, Home Defense, Range
Housing Material: 7075 Aluminum
Waterproof Rating: Yes — Vortex does not publish a specific IP rating
Brightness Settings: 8 daylight / 2 night vision
Shake Awake: Yes
Night Vision Compatible: Yes
Features
- Massive competition-oriented viewing window
- 5 MOA or 8 MOA red dot
- 7075 aluminum housing
- DeltaPoint Pro footprint
- Distortion-reducing aspherical lens
- Fast-Rack aggressive front texturing
- ShockShield polymer insert
- Motion activation
- 10-minute auto shutoff
- Top-loading battery
- Button lockout
- 8 daylight brightness settings
- 2 night-vision settings
- Waterproof construction
- Fogproof construction
- Shockproof construction
- Vortex Unlimited Unconditional Lifetime Warranty
Pros & Cons
Pros
Huge window specifically designed around fast competitive shooting
5 MOA and 8 MOA options are well suited to speed
Rugged 7075 aluminum construction
Top-loading battery means no optic removal for battery changes
Motion activation
Night-vision compatible
DPP footprint gives us another premium option for DPP-cut pistols
Aggressive front texture allows slide manipulation against a surface
Excellent lifetime warranty
Strong alternative to other large-window competition optics
Cons
Large physical size isn’t ideal if concealment is the priority
Open emitter provides less environmental protection than an enclosed design
No solar backup
$599.99 MSRP puts it firmly into premium territory
Large 5/8 MOA dots aren’t as precision-oriented as smaller-dot options
Competition specialization makes it less universally applicable than the Defender-ST
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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
Trijicon SRO
Large-window competition optic that delivers exceptional speed and an expansive field of view for rapid target transitions.
Specifications
Footprint: RMR
Installation: Direct Fit
Reticle: 1.0 MOA Dot 2.5 MOA Dot 5.0 MOA Dot
Window Size: 0.98″ × 0.89″
Weight: 1.6 oz
Battery: CR2032 (Top-Loading)
Battery Life: Over 3 Years
Recommended Use: Competition, Range
Housing Material: 7075-T6 Forged Aluminum
Waterproof Rating: 10 ft (3 m)
Shake Awake: No
Night Vision Compatible: Yes
Features
Features
Large Circular Viewing Window
The oversized window provides an exceptionally wide field of view, making it easier to find and track the dot during rapid fire and target transitions.
Top-Loading Battery Compartment
The CR2032 battery can be replaced from the top of the optic without removing it from the slide, helping maintain your zero after battery changes.
Forged 7075-T6 Aluminum Housing
Constructed from rugged aircraft-grade aluminum for outstanding durability while keeping weight to a minimum.
Multi-Coated Glass Lens
Premium glass delivers exceptional clarity, excellent light transmission, and a crisp, distortion-free sight picture.
8 Brightness Settings
Offers multiple brightness levels, including dedicated night vision settings, allowing the dot to remain visible in virtually any lighting condition.
Automatic & Manual Brightness Control
Users can choose automatic brightness adjustment or manually select their preferred brightness level for changing lighting conditions.
Parallax-Free Design
Engineered to minimize point-of-impact shift regardless of eye position, helping maintain accuracy during fast shooting.
Waterproof Construction
Built to withstand rain, moisture, and harsh environmental conditions while maintaining dependable performance.
Optimized for Competition Shooting
Designed with speed in mind, the SRO’s large viewing window and easy dot tracking make it one of the most popular optics for USPSA, Steel Challenge, and other action shooting sports.
Pros & Cons
Pros
Massive viewing window for exceptional dot tracking
Outstanding optical clarity
Top-loading battery compartment
Extremely durable forged aluminum housing
RMR footprint fits many optics-ready pistols
Excellent choice for USPSA and Steel Challenge
Available in multiple dot sizes
Lock-In and Lock-Out brightness modes
Cons
Larger size makes it less ideal for concealed carry
Open emitter can collect dirt, lint, or moisture
More expensive than many competing optics
Not as impact-resistant as the RMR Type 2 for hard-duty applications
No Shake Awake technology
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.
