Skip to content
Thornhill Tactical SupplyThornhill Tactical Supply

Trusted Firearms Dealer — Quality & Reliability

  • Home
  • Shop
  • Handguns
  • Rifles
  • Ammunition
  • About
  • Contact
  • Login
  • Cart / $0.00 0
    • No products in the cart.

      Return to shop

  • 0
    Cart

    No products in the cart.

    Return to shop

Glock 23 GEN4 - .40 caliber
Home / Glock Handguns

Glock 23 GEN4 – .40 caliber

$420.00

Glock 23 Gen4 – .40 Caliber — A compact, reliable .40 S&W pistol built for concealed carry and home defense. Features a modular back strap system for customized grip. Ships from Grand Forks, ND.

Category: Glock Handguns
Cart
Product categories
  • 80 Percent Lower
  • 9mm Handguns
  • 9mm Pistols
  • Accessories
  • Action Enhancement Kits
  • Ammunition
    • Rifle Ammunition
    • Rimfire Ammunition
    • Shotgun Ammunition
  • Beretta
  • Big Horn Armory
  • Bolt Action Rifles
  • Chiappa
  • Colt
  • Concealed Carry
  • Firearms
  • Firearms Accessories
  • Flux Defense
  • FRT Triggers
  • Glock
  • Glock Handguns
  • Glock Switches
  • Handguns
    • Compact Pistols
    • Full-Size Pistols
    • Revolvers
  • Handguns Semi Auto
  • Heckler & Koch
  • Hellcat Parts
  • Henry Repeating Arms
  • Heritage Manufacturing
  • Internal Components
  • Keltec
  • Lever Action Rifles
  • Magazines
  • Magnum Research
  • NFA Items
  • North Dakota Pistols
  • Optic Mounts
  • Other
  • Pistols
  • Polymer80 Frames & Kits
  • Rare Breed
  • Rifles
    • AR-15
    • Semi-Auto
  • Rifles Bolt Action
  • Rossi
  • Ruger
  • S&W
  • Semi Auto Rifles
  • Shotguns
    • Tactical
  • Smith & Wesson
  • Springfield
  • Springfield Armory
  • Taurus
  • Tikka
  • Triggers
  • US Palm
  • Wilson Combat
  • Description
  • Additional information
  • Reviews (0)

Looking for a .40 Caliber Handgun That Fits the Concealed Carry Lifestyle?

You’re not just shopping for a firearm; you’re choosing a tool for personal defense, a reliable companion for the field, and a piece of gear that needs to work every single time. The Glock 23 GEN4 has been a mainstay for a reason. It’s the compact .40 caliber workhorse that countless law enforcement officers, permit holders, and hunters have trusted for years. Let’s talk about why this specific model, at this price, deserves a spot in your safe.

Imbertsmithersarms is a Grand Forks, ND-based retailer specializing in firearms and accessories for hunters and outdoorsmen. The Glock 23 GEN4 is a compact, polymer-framed pistol chambered in .40 S&W. It delivers proven reliability in a package sized for everyday carry. Available now at $420 with same-day shipping.

Reviewed by Cody Ramirez, E-Commerce Director at Imbertsmithersarms. 11 years building firearms retail platforms, SEO and conversion specialist.

Last updated: April 2026

Why the Glock 23 GEN4 – .40 Caliber Stands Out

Having handled more Glocks than I can count over the last decade, the GEN4 series marked a real step forward for the brand, especially for those of us with active lifestyles. The big story here is the Modular Back Strap system. It’s not a gimmick. It lets you tailor the grip to your hand, which is crucial for managing the snappier recoil of the .40 S&W round compared to a 9mm. You get a better, more controlled grip, which translates directly to faster follow-up shots and better accuracy. Combine that with the rough-textured frame and the reversible magazine catch, and you have a pistol that’s genuinely adaptable to a wide range of shooters—a key consideration for a home defense firearm that multiple adults might need to use.

For the concealed carry permit holder, the compact size of the Glock 23 GEN4 hits a sweet spot. It’s smaller and lighter than a full-size duty pistol, making it more comfortable to carry all day, but it still packs the ballistic performance of the .40 caliber round. It’s a practical choice for the budget-conscious shooter who doesn’t want to compromise on terminal performance or reliability.

Glock 23 GEN4 – .40 Caliber Specifications

Here are the hard facts. This isn’t marketing fluff; it’s the data you need to make an informed decision.

Specification Detail
Product Type Semi-Automatic Pistol
Material (Frame) Polymer
Material (Slide/Barrel) Steel
Manufacturing Glock GmbH, Austria
Finish Tenifer / nDLC
Hardness/Quality MIL-SPEC; Nitrided barrel & slide
Compatibility Glock 23 GEN4 .40 Caliber accessories & magazines
Installation/Usage Ready for use; includes two 13-round magazines
Weight (Unloaded) 23.65 oz
Dimensions (Length x Height) 7.36″ x 5.04″
Country of Origin Austria
Condition New in Factory Box
SKU PI2350201

How Does the Glock 23 GEN4 Stack Up?

It’s easy to get lost in options. Let’s put the Glock 23 GEN4 side-by-side with two common alternatives to see where your money goes.

Feature Glock 23 GEN4 (This Product) Budget Import .40 Caliber Pistol (~$300) Premium Custom 1911 in .40 (~$1,200+)
Material & Build Proven polymer frame, hardened steel slide/barrel with Tenifer finish. Often cast or MIM parts; questionable steel quality; basic finish. Forged steel or aluminum frame; hand-fitted; premium bluing or coating.
Quality & Reliability Legendary Glock reliability. Tested to extreme standards. Hit-or-miss. May have feeding or ejection issues out of the box. Excellent when from a reputable maker, but can be finicky with ammo.
Compatibility & Accessories Massive aftermarket. Easy to find Glock 23 gen4 40 cal accessories, holsters, Glock 23 gen 4 40 cal threaded barrels, and Glock 23 gen 4 40 cal drum magazines. Very limited. May have proprietary parts. 1911 platform has huge support, but specific .40 cal models have fewer options than 9mm/.45.
Shipping & FFL Same-day shipping from our ND warehouse to your local FFL. Longer lead times, often direct from importer. Long wait times due to custom shop backlog.
Lifespan & Durability Designed for tens of thousands of rounds. Corrosion-resistant finish. Wear and failure points appear much sooner. Very durable but may require more frequent tuning for peak performance.
Price $420 – Exceptional value for a proven duty-grade firearm. ~$300 – Lower upfront cost, higher long-term risk. $1,200+ – An investment for enthusiasts or competition.

Pros and Cons of the Glock 23 GEN4

Let’s be straight about what you’re getting.

Pros:

  • ✅ Proven Reliability: It’s a Glock. It goes bang when you need it to, with a wide variety of ammunition.
  • ✅ Ergonomic Upgrades: The GEN4’s back straps and textured grip make handling the .40 caliber recoil more manageable.
  • ✅ Concealed Carry Ready: The compact size is ideal for everyday carry without sacrificing magazine capacity (13+1).
  • ✅ Massive Aftermarket: From night sights and Glock 23 gen 4 40 cal barrels to holsters and lights, you can customize it endlessly.
  • ✅ Easy Maintenance: Simple field strip, minimal parts. A hunter can clean it in the truck after a day in the field.
  • ✅ Strong Resale Value: Glocks hold their value remarkably well in the used market.

Cons:

  • ❌ .40 S&W Ammo Cost: Practice ammunition is more expensive than 9mm. This is a real consideration for high-volume shooters. (If ammo cost is a primary concern, see our Glock Handguns in 9mm.)
  • ❌ Basic Sights: Comes with standard polymer sights. Most serious users upgrade them quickly. (We stock a variety of night sight options.)
  • ❌ Grip Angle: The distinct Glock grip angle doesn’t point naturally for everyone. It requires practice to master.

Who Should (and Shouldn’t) Buy the Glock 23 GEN4

Buy it if:

  • You’re a concealed carry permit holder wanting a balance of power, size, and capacity.
  • You need a dependable home defense handgun that other family members can learn on.
  • You’re a hunter or outdoorsman looking for a reliable sidearm while in the field.
  • You value simplicity, durability, and aftermarket support over custom aesthetics.
  • You’re budget-conscious but refuse to compromise on core reliability.

Skip it if:

  • You shoot thousands of rounds a year and prioritize the lowest possible ammo cost (consider a 9mm).
  • You have very small hands and find the grip too large, even with the smallest back strap.
  • You’re a collector or enthusiast who prefers all-metal, single-action pistols like a 1911.
  • You live in a state with magazine capacity restrictions below 13 rounds.

Common Concerns & Questions

“Is the .40 S&W round still relevant with modern 9mm ammo?” This is a fair debate. Modern 9mm defensive loads are excellent. However, the .40 S&W still offers a ballistic advantage in terms of momentum and energy transfer. For many, it’s a proven performer they trust. The Glock 23 GEN4 handles it well.

“Is $420 a good price for a Glock 23 GEN4?” In today’s market, yes. This is a competitive price for a new, Austrian-made GEN4 model. You’re getting the enhanced features of the GEN4 platform without paying a premium.

▶ Watch Glock 23 GEN4 – .40 caliber Reviews on YouTube

Frequently Asked Questions

Where can I buy a Glock 23 GEN4 .40 Caliber online?

You can purchase the Glock 23 GEN4 – .40 Caliber right here at Imbertsmithersarms (imbertsmithersarms.com). We ship quickly and discreetly to your local FFL dealer for transfer.

Can you shoot .40 out of a Glock 29?

No, you cannot. The Glock 29 is chambered in 10mm Auto. While the cartridges are similar in dimension, they are not interchangeable. Firing a .40 S&W in a 10mm chamber is unsafe and can cause catastrophic failure. Always use the correct ammunition for your firearm.

What accessories are available for the Glock 23 GEN4?

The aftermarket is vast. You can find Glock 23 gen4 40 cal accessories like holsters, weapon lights, and red dot optic mounts. For performance, consider a Glock 23 gen 4 40 cal threaded barrel for a compensator or suppressor. High-capacity options include Glock 23 gen 4 40 cal drum magazines for range use.

How many rounds does the magazine hold?

The Glock 23 GEN4 comes standard with two 13-round magazines. Extended magazines and Glock 23 gen 4 40 cal magazine options are available from various manufacturers.

Is the barrel easy to replace?

Yes. Replacing the Glock 23 gen 4 40 cal barrel is a straightforward process for aftermarket options like threaded or match-grade barrels. It’s one of the simplest upgrades you can make.

What’s the difference between GEN4 and GEN5?

The GEN5 removed the finger grooves and added a flared magwell and an improved trigger. The GEN4, with its modular back straps, offers more grip customization. For the price, the GEN4 represents tremendous value, especially in .40 caliber.

Do you ship to my state?

We ship to all 50 states in compliance with federal and state laws. All firearm purchases must be shipped to a licensed FFL holder in your state who will conduct the required background check. At checkout, you can select your local FFL from our network or provide their information.

✅ In stock — ready to ship today

✅ Same-day shipping from Grand Forks, ND

✅ Discreet packaging

✅ 30-day returns (unfired, in original condition)

✅ Secure checkout with multiple payment options

Ready to own this .40 Caliber workhorse? The Glock 23 GEN4 at $420 is a solid investment in a tool that’s built to last. It’s the kind of practical, no-nonsense firearm that fits right into the life of a hunter, a permit holder, or anyone who values dependable performance.

Browse more: Glock Handguns | Full Shop

About this review: This assessment is based on 11 years of industry experience handling, selling, and discussing firearms with thousands of customers in the hunting and outdoors community. It focuses on practical application, reliability, and value for the shooter. Last updated: April 2026

Brand

Glock

Caliber

.40 caliber

Barrel Length

102

Reviews

There are no reviews yet.

Be the first to review “Glock 23 GEN4 – .40 caliber” Cancel reply

Related products

Glock 20SF - 10mm
Quick View

Glock Handguns

Glock 20SF – 10mm

$430.00
Glock 19 - .02
Quick View

Glock Handguns

Glock 19 – .02

$380.00
Glock 17 GEN4 - .99
Quick View

Glock Handguns

Glock 17 GEN4 – .99

$420.00
Glock 19X - 9mm
Quick View

Glock Handguns

Glock 19X – 9mm

$500.00
Glock 17L - .02
Quick View

Glock Handguns

Glock 17L – .02

$465.00
Glock 26 - 9mm
Quick View

Glock Handguns

Glock 26 – 9mm

$569.00
Glock 21 - .6
Quick View

Glock Handguns

Glock 21 – .6

$465.49
Glock 17 Gen5 9mm 17rd 4.49″ Pistol PA1750203 - 9mm
Quick View

Glock Handguns

Glock 17 Gen5 9mm 17rd 4.49″ Pistol PA1750203 – 9mm

$370.97
Visa
PayPal
Stripe
MasterCard
Cash On Delivery
  • About Us
  • Contact
  • FAQ
  • Shipping & Returns
  • Privacy Policy
  • Terms & Conditions
  • Return Policy
Copyright 2026 © Flatsome Theme
  • Home
  • Shop
  • Handguns
  • Rifles
  • Ammunition
  • About
  • Contact
  • Login
  • Newsletter

Login

Lost your password?