Best Outdoor Handguns · #2
G20 Gen5 MOS (10 mm)
Glock
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Fifteen rounds of 10 mm, optic-ready, and reliable when packed in silt and rain.
Pros
- Powerful 10mm Auto cartridge for dangerous game defense
- Exceptional Glock reliability in adverse conditions
- Modular Optic System (MOS) for red dot sight compatibility
- High 15-round magazine capacity
- Durable and corrosion-resistant Tenifer slide finish
Cons
- Substantial size and weight may be cumbersome for some
- Recoil can be stout for those unaccustomed to 10mm
- Limited practical concealed carry options due to size
Best uses
- Dangerous game defense
- Backcountry hiking/camping
- Hunting sidearm
- Bear country protection
- Outdoor security
Specifications
- Caliber
- 10mm Auto
- Capacity
- 15+1 rounds
- Weight (unloaded)
- Approx. 30.7 oz (870g)
- Barrel Length
- 4.61 inches
- Optic Ready
- Yes (MOS)
- Frame Material
- Polymer
Pricing
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Best for
Dangerous game defense, Backcountry hiking/camping, Hunting sidearm, Bear country protection, Outdoor security
Where to buy the G20 Gen5 MOS (10 mm)
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The Glock 20, specifically the Gen5 MOS model, secures a solid #2 spot on our list for a few compelling reasons. This isn't a firearm for the faint of heart; it's a serious tool chambered in 10mm Auto, a cartridge known for its formidable power and versatility. For those venturing deep into territories where dangerous game might be encountered – think grizzly country, or even just areas with aggressive wild hogs – the G20 offers a significant psychological and practical advantage over lesser calibers. It’s also a surprisingly accurate pistol for its size and power, especially with the addition of an optic, which the MOS system readily accommodates. What sets the Gen5 apart from previous iterations is a suite of incremental but meaningful improvements. The Modular Optic System (MOS) allows for direct mounting of various red dot sights, enhancing target acquisition and precision, particularly in adverse conditions or under pressure. The absence of finger grooves on the grip, a return to earlier Glock designs, provides a more universally comfortable and adaptable hold for a wider range of hand sizes. Coupled with Glock's legendary reliability and straightforward operation, the G20 Gen5 MOS isn't just a handgun; it's a robust, field-ready instrument built to perform when it absolutely has to, making it an ideal companion for the seasoned outdoors enthusiast who prioritizes power and dependability.
For Who & Why
This pistol is squarely aimed at experienced outdoorsmen, hunters, and backcountry enthusiasts who operate in areas where large predators or dangerous animals are a real concern. It’s not a plinking pistol nor a concealed carry piece for urban environments, though it could serve in a home defense role. The power of the 10mm cartridge, combined with the G20's substantial magazine capacity, provides a significant level of protection and confidence. Its robust construction means it can be carried and relied upon in harsh weather and rugged terrain without excessive concern for delicate parts or malfunctions. This is a working gun for serious situations, designed to be there when you need it most.
Materials & Build
Glock’s design philosophy prioritizes simplicity and ruggedness, and the G20 Gen5 MOS is no exception. It features a durable polymer frame that significantly reduces overall weight compared to all-metal designs, yet still handles the potent 10mm recoil effectively. The slide is precision-machined steel, treated with Glock's famously tough Tenifer finish, providing exceptional corrosion resistance and hardness. Internal components are kept to a minimum, and their proven design contributes to the platform's reputation for unwavering reliability. The MOS system itself is integrated cleanly, offering a stable and low-profile mounting surface for red dot optics without compromising the pistol's overall strength or balance.
Performance in Field
In real-world conditions, the G20 performs exactly as expected: reliably. It digests a wide range of 10mm ammunition without complaint, from lighter target loads to heavy, hard-cast bear defense rounds. Recoil is manageable for a powerful cartridge, largely due to the polymer frame's flex and the pistol's ample grip. Accuracy is very good, particularly with quality ammunition, and the MOS system truly shines here, allowing for much faster target acquisition and improved precision, especially at longer ranges or in low light. We've seen it perform without issue after being exposed to dust, grit, and rain, affirming its robust design and suitability for demanding outdoor use.
Weight & Carry
For a full-sized 10mm pistol with a 15-round capacity, the G20 Gen5 MOS is surprisingly manageable in terms of weight. At just over 30 ounces unloaded, it's not a featherweight, but it’s far from cumbersome. This weight contributes to recoil mitigation, making it more comfortable to shoot. Its dimensions are substantial, meaning it’s typically carried in a chest holster or an outside-the-waistband (OWB) holster, particularly when hiking or fishing. While it could theoretically be carried concealed, its size makes that impractical for most. The balance feels good in hand, not overly front-heavy, even with a loaded magazine.
Durability & Longevity
Glock’s reputation for durability is well-earned, and the G20 Gen5 MOS maintains this standard. These pistols are built to be abused and keep running. The polymer frame resists impacts and environmental degradation, while the Tenifer finish on the slide provides excellent protection against rust, even in humid or wet conditions. Minimal moving parts and a straightforward design reduce potential points of failure. With basic maintenance, a G20 will reliably serve its owner for decades, enduring countless rounds and challenging conditions. It’s an investment that pays dividends in long-term dependability and peace of mind.
Alternatives & Value
At its price point, the G20 Gen5 MOS offers exceptional value for a high-capacity 10mm pistol with an optics-ready capability. Comparable alternatives might include the Springfield XD-M Elite 10mm, which offers similar capacity and features but often at a slightly higher price point, or the Smith & Wesson M&P 2.0 in 10mm, which also provides optics readiness. While other 10mm options exist from manufacturers like SIG Sauer or Colt, they often come at a premium or lack the direct optics mounting versatility. The Glock G20 strikes an excellent balance of proven reliability, formidable power, and practical features for its cost, making it a smart choice for the serious outdoorsman.
How we chose
We started with a long list of best outdoor handguns that people actually buy, cut anything that could not clear our baseline for durability and field performance, then ranked the 10 that were left against the same criteria. Rankings are editorial. No brand pays for placement, and affiliate links never move a pick up or down.
- Real-world durability
- How the material, stitching, or steel holds up after a season of hard use — not how it looks new.
- Performance in bad conditions
- Wind, rain, cold, and grit are the test. Anything that only works on a nice day gets marked down.
- Weight and packability
- Every ounce has to earn its place in the pack, but not at the cost of something that fails in the field.
- Ease of use
- Setup, adjustment, and maintenance with cold hands, in the dark, without the manual.
- Value at its price point
- Compared against the closest competitors in the same tier, not against cheaper gear in a different class.
- Repairability and support
- Field-fixable design, available parts, and a warranty the maker actually honors.
G20 Gen5 MOS (10 mm) — frequently asked questions
- Is the G20 Gen5 MOS (10 mm) worth it?
- We rank it #2 in Best Outdoor Handguns. Fifteen rounds of 10 mm, optic-ready, and reliable when packed in silt and rain.
- What is the G20 Gen5 MOS (10 mm) best for?
- Best for dangerous game defense, backcountry hiking/camping, hunting sidearm and bear country protection. Standouts: powerful 10mm auto cartridge for dangerous game defense and exceptional glock reliability in adverse conditions.
- What are the downsides of the G20 Gen5 MOS (10 mm)?
- Substantial size and weight may be cumbersome for some, Recoil can be stout for those unaccustomed to 10mm and Limited practical concealed carry options due to size.
- What are the key specs of the G20 Gen5 MOS (10 mm)?
- Caliber: 10mm Auto · Capacity: 15+1 rounds · Weight (unloaded): Approx. 30.7 oz (870g) · Barrel Length: 4.61 inches · Optic Ready: Yes (MOS)
- For Who & Why — what should I know about the G20 Gen5 MOS (10 mm)?
- This pistol is squarely aimed at experienced outdoorsmen, hunters, and backcountry enthusiasts who operate in areas where large predators or dangerous animals are a real concern. It’s not a plinking pistol nor a concealed carry piece for urban environments, though it could serve in a home defense role.
- Materials & Build — what should I know about the G20 Gen5 MOS (10 mm)?
- Glock’s design philosophy prioritizes simplicity and ruggedness, and the G20 Gen5 MOS is no exception. It features a durable polymer frame that significantly reduces overall weight compared to all-metal designs, yet still handles the potent 10mm recoil effectively.
Compare side by side
Put the G20 Gen5 MOS (10 mm) against any other pick on this list — specs, price, pros, cons and reader ratings.