The Glock 41 Gen4 MOS was designed from the ground up with precision shooters in mind. Its long slide, balanced recoil characteristics, and optics-ready platform give competitors a measurable advantage in both accuracy and speed. This pistol combines the trusted reliability of the Glock Safe Action System with enhancements tailored to high‑performance shooting.

• Extended Barrel for Accuracy
  The 5.31‑inch barrel lengthens the sight radius, reducing aiming error and improving shot consistency at greater distances — a key requirement for competition shooting.

• Long Slide with Reduced Muzzle Flip
  The long slide adds weight to the front of the pistol, which helps manage recoil and muzzle rise for faster follow‑up shots during timed events.

• Modular Optic System (MOS)
  Factory‑cut MOS allows the seamless installation of red dot optics, which significantly speeds up target acquisition and improves performance under time pressure.

• Customizable Grip Texture
  The Gen4 Rough Textured Frame and interchangeable backstraps allow the shooter to tailor the grip to their hand size, improving comfort and control over long matches.

• Consistent Safe Action Trigger
  The predictable 5.5‑lb trigger pull delivers a consistent break, enhancing accuracy in high‑pressure scenarios.

Yes. This model is part of Glock’s Modular Optic System (MOS) lineup, which is specifically designed to accept miniature reflex sights and other optics without the need for aftermarket slide milling. This makes the pistol highly adaptable to the shooter’s preferred sighting system.

• Factory MOS Cut Slide
  The slide comes pre‑cut from the factory for optics installation, avoiding costly and time‑consuming gunsmith work.

• Multiple Adapter Plates Included
  Each Glock 41 Gen4 MOS ships with several adapter plates to fit leading optic brands such as Trijicon, Leupold, Holosun, and others.

• Quick and Secure Installation
  Optics can be mounted with just basic tools and minimal effort, while maintaining proper alignment and torque specifications.

• Retention of Iron Sights
  Standard sights remain in place for co‑witnessing or backup use, adding redundancy in case of optic failure.

• Tested for Durability
  Glock factory testing ensures that optics mounted on MOS slides retain zero and withstand recoil from thousands of .45 ACP rounds.

Firearm legality varies by jurisdiction, but Brownell Glock simplifies the process by providing the correct permits and compliance documentation. While the buyer must always verify local laws, we support our customers by guiding them through every step of the licensing and import process.

• Licensed Export and Import Support
  We provide the necessary export documentation and guide you on obtaining import permits required by your country or state.

• State and Local Compliance
  Our team is familiar with regional restrictions and will advise you if additional paperwork is required before shipment.

• Customs Clearance Assistance
  We include all relevant forms and certifications with your order to streamline customs processing and avoid delays.

• Restricted Zones Transparency
  Before taking payment, we’ll confirm if your location is eligible for shipment and notify you of any restrictions upfront.

• Customer Responsibility
  We encourage all customers to check with local authorities or legal counsel to ensure full compliance before placing an order.

We deliver the Glock 41 Gen4 MOS as a complete, factory‑sealed package with all original equipment manufacturer (OEM) accessories. This ensures that you receive everything you need to begin using and maintaining your firearm right away.

• Lockable Glock Hard Case
  Durable polymer case with foam lining for safe storage and transport of your pistol and accessories.

• Three OEM Magazines
  Standard 13‑round .45 ACP magazines included to keep you range‑ready out of the box.

• Interchangeable Backstrap Set
  Four backstraps with and without beavertails to customize grip size and feel.

• Cleaning Rod and Brush
  Factory tools for maintaining the barrel and chamber after shooting sessions.

• MOS Mounting Plates and Screws
  Multiple plates included for different red dot optics brands, plus all necessary screws.

• Owner’s Manual and Test Fire Data
  Factory manual detailing operation and safety, along with Glock’s test‑fired casing certificate verifying function.

While both generations share Glock’s hallmark reliability, there are key differences in ergonomics, barrel design, and slide features. Knowing these differences helps customers decide which generation better suits their shooting style.

• Grip Texture and Finger Grooves
  Gen4 pistols feature the Rough Textured Frame with finger grooves, whereas Gen5 removes grooves entirely for a smoother front strap and universal fit.

• Barrel Technology
  Gen5 introduces the Glock Marksman Barrel (GMB) with enhanced polygonal rifling for improved accuracy; Gen4 uses the standard Glock barrel.

• Magwell Design
  Gen5 pistols include a flared magwell for faster reloads under stress — a feature absent in Gen4 models.

• Slide Serrations
  Gen5 slides have front serrations for improved press checks; Gen4 models only have rear serrations.

• Internal Changes
  Gen5 incorporates redesigned components for improved trigger feel and longevity, while Gen4 maintains the dual recoil spring system for slide durability.

The Glock 41 Gen4 MOS, though originally built for competition and duty, offers several characteristics that also make it a solid option for home defense—especially for individuals who prefer the larger .45 ACP caliber. While it’s not as compact as models typically used for concealed carry, its extended sight radius, customizable optics, and powerful stopping power make it an excellent home defense platform when paired with proper training.

• High Stopping Power
  Chambered in .45 ACP, the Glock 41 delivers serious terminal energy with each round, which is critical in a home defense situation where quick threat neutralization is vital.

• MOS Optics Compatibility
  Red dot optics improve speed and visibility in low-light conditions, making it easier to acquire and stay on target during high-stress encounters.

• Reduced Recoil for Faster Follow-ups
  The extended slide and longer barrel provide better weight distribution, which helps minimize muzzle flip for quicker follow-up shots.

• Accessory Rail for Lights or Lasers
  Equipped with a standard Glock rail, the firearm can accept tactical lights or laser aiming devices, both of which enhance threat identification in dark environments.

• Reliable Trigger System
  The Safe Action® trigger is smooth, consistent, and includes integrated safety mechanisms to prevent accidental discharge.

• Ample Magazine Capacity
  The 13-round magazine allows for sustained defense without the immediate need for reloading, especially important in multi-threat scenarios.

Glock pistols, including the 41 Gen4 MOS, are world-renowned for their rugged reliability and resilience under extreme environmental stress. Whether exposed to dust, mud, water, or freezing temperatures, this pistol maintains consistent function with minimal maintenance. Glock’s testing protocols far exceed typical civilian use scenarios, making this firearm an excellent choice for users in demanding conditions.

• Tenifer-Treated Slide
  The steel slide is treated with a gas nitride Tenifer process, enhancing its corrosion resistance and surface hardness to withstand exposure to humidity, saltwater, and wear.

• Functionality in Extreme Temps
  Glock firearms are rated to perform in extreme cold and heat—from below freezing to over 100°F—without compromising reliability or accuracy.

• Minimal Lubrication Requirements
  The internal Safe Action components are designed to function smoothly with only minimal lubrication, even after prolonged use.

• Resilient Recoil Spring Assembly
  The dual recoil spring system absorbs shock effectively and enhances long-term reliability, particularly in repeated rapid-fire or adverse environments.

• Debris Tolerance
  The open internal design of Glock pistols allows debris and fouling to exit the slide during cycling, reducing the chance of malfunction.

• Field-Tested Globally
  Militaries, law enforcement agencies, and special units worldwide trust Glock pistols for high-stakes missions, validating their real-world durability.

To keep your Glock 41 Gen4 MOS in optimal working condition, it’s recommended to follow a regular maintenance schedule based on frequency of use. Whether you use it for competition, home defense, or training, regular cleaning ensures reliable cycling, accuracy, and longevity. Even with Glock’s reputation for low maintenance, preventative care is essential.

• After Every Firing Session
  Clean the pistol thoroughly after each range trip or use. Fouling from .45 ACP rounds can accumulate quickly and affect performance if not removed.

• Monthly Inspection When Unused
  If the firearm is stored without regular use, perform a light inspection and wipe-down at least once a month to prevent rust or lubricant breakdown.

• Focus on High-Friction Areas
  Prioritize cleaning the barrel, feed ramp, locking block, slide rails, and firing pin channel where buildup tends to occur.

• Proper Lubrication Points
  Apply Glock-approved lubricant to five key areas: the connector, trigger bar, slide rails (4), and barrel hood. Over-lubing should be avoided to prevent residue attraction.

• Check for Wear on Springs
  During cleaning, inspect the recoil spring, firing pin spring, and trigger spring for wear, and replace as needed after 5,000–10,000 rounds.

• Reassemble and Perform Function Check
  After cleaning and lubrication, always perform a function test to verify the trigger reset, slide lock, and firing pin engagement.

The Glock 41 Gen4 MOS is rated to handle +P ammunition, which features higher chamber pressures than standard .45 ACP loads. However, while occasional use is generally safe, consistent use of +P or especially +P+ ammunition requires careful consideration due to the increased stress it places on internal components and the firearm’s longevity.

• +P is Safe for Occasional Use
  Glock confirms that their pistols are designed to handle +P rounds. Occasional use in training or self-defense is acceptable and won’t damage the pistol.

• +P+ Not Recommended
  While some +P+ rounds may function safely, they often exceed SAAMI pressure limits and are not officially endorsed by Glock. Use only if necessary and with caution.

• Increased Recoil Management
  +P ammunition generates higher recoil and muzzle rise, which can affect follow-up shot accuracy and shooter fatigue during long sessions.

• Faster Component Wear
  Continuous use of overpressure rounds can lead to quicker degradation of springs, locking lugs, and barrel life.

• Optic Mounting Considerations
  If using a mounted red dot optic, confirm that it’s rated to handle the higher impulse forces generated by +P loads.

• Barrel and Chamber Inspection
  After shooting +P ammo, inspect the barrel and feed ramp for unusual wear patterns or residue buildup.

Absolutely. One of Glock’s key advantages is its modularity and compatibility with a wide range of aftermarket parts and upgrades. Whether you’re looking to improve ergonomics, performance, or aesthetics, the Glock 41 Gen4 MOS supports a high level of customization without compromising its core reliability.

• Aftermarket Triggers
  Several companies offer drop-in trigger systems that improve pull weight, reset time, and tactile feedback for better competition or tactical performance.

• Match-Grade Barrels
  Users can swap in threaded or fluted barrels for suppressor use or enhanced accuracy. Popular brands include ZEV Technologies and Lone Wolf.

• Extended Controls
  Install extended slide stops, mag releases, or takedown levers for faster manipulation during reloads and malfunction clearing.

• Slide Enhancements
  Slides with aggressive serrations, porting, or window cuts can be added for reduced weight and improved handling.

• Grip Frame Modifications
  Stippling, undercuts, or flared magwells can be applied to improve traction and reload speed.

• Optics and Light Attachments
  MOS platform supports multiple optic types, and the integrated accessory rail supports weapon-mounted lights or lasers from top-tier brands.

• Recoil Springs and Guide Rods
  Tunable recoil systems are available for users who shoot light loads or need to adjust felt recoil for faster target transitions.