Glock with Manual Safety: A Comprehensive Overview (as of 02/11/2026)
Glock pistols, renowned for their simplicity, traditionally lack a manual safety. However, demand and modifications have introduced options, including aftermarket systems like TSSG and Cominolli,
altering the standard three-safety system—trigger, firing pin, and drop safety—present in every Glock.
Glock pistols have achieved global prominence due to their reliability, simplicity, and robust design, becoming a staple for law enforcement, military personnel, and civilian shooters alike. Central to the Glock philosophy is a focus on inherent safety features, primarily relying on a three-part system: a trigger safety, a firing pin safety, and a drop safety. These internal mechanisms work sequentially with trigger movement, aiming to prevent accidental discharge.
Despite this established safety system, a recurring concern among some users revolves around the absence of a manual, external safety lever. This absence is a deliberate design choice by Glock, yet it fuels ongoing debate and a desire for greater user control. The lack of a manual safety prompts questions about carry options, secure storage, and peace of mind, particularly for individuals unfamiliar with the Glock’s operational principles. This has led to exploration of aftermarket modifications and alternative pistol designs.
The Standard Glock Safety System
The core of Glock’s safety design rests upon three independent, internal safety mechanisms. Each operates sequentially, linked directly to the trigger’s function, ensuring a high degree of safety without requiring external manipulation. First, the trigger safety—a lever integrated into the trigger itself—must be actively depressed before the trigger can be pulled, preventing unintentional activation.
Secondly, the firing pin safety blocks the firing pin from moving forward unless the trigger is fully and intentionally pressed. This prevents discharge from a drop or impact. Finally, the drop safety, or sear safety, prevents the slide from releasing and the firing pin from striking the primer if the pistol is dropped.
These three safeties function in concert, creating a system Glock believes offers a superior level of safety compared to traditional manual safety designs. The system’s effectiveness relies on consistent user training and adherence to safe firearm handling practices.
The Absence of a Factory Manual Safety
Historically, Glock has steadfastly refrained from incorporating a factory-installed manual safety lever on its pistols. This design choice stems from a core philosophy prioritizing simplicity and a reliance on the aforementioned three internal safeties: trigger, firing pin, and drop safety. Glock’s reasoning centers on the belief that external safeties can be inadvertently disengaged, or forgotten by the user, creating a false sense of security.
The company argues that the internal safeties, being directly tied to the trigger pull, are always active and cannot be bypassed. This approach eliminates the potential for human error associated with manipulating an external control. Consequently, standard Glock models lack any external, user-operated safety mechanism, distinguishing them from many other pistol designs.
This absence has been a point of contention for some users, particularly those accustomed to firearms with manual safeties, leading to a demand for aftermarket solutions.
Historical Context: Why Glock Doesn’t Include a Manual Safety
Glock’s decision to omit a manual safety originates from its development in the 1980s, influenced by the needs of Austrian law enforcement. Gaston Glock prioritized a firearm that was intuitive, reliable, and safe to operate, even for users with limited training. The prevailing thought was that adding an external safety introduced another potential point of failure and a step that could be overlooked in a high-stress situation.
The internal safety system – trigger, firing pin, and drop safety – was considered sufficient to prevent negligent discharges; This system ensures the pistol cannot fire unless the trigger is intentionally pulled, and all safety mechanisms are disengaged sequentially. This philosophy directly countered the common practice of relying on external safeties prevalent in other designs at the time.
Glock believed a simpler design would be inherently safer, reducing the likelihood of user error and maximizing reliability under adverse conditions.
Early Discussions and User Demand for Manual Safeties
Despite Glock’s initial design philosophy, the absence of a manual safety became a frequent topic of discussion among American gun owners and law enforcement agencies. Many users, accustomed to firearms with external safeties, expressed a desire for an additional layer of security, particularly for concealed carry or storage purposes. Concerns centered around the potential for accidental discharge during holstering or de-holstering, or in the hands of unauthorized individuals.
This demand fueled a market for aftermarket modifications aimed at adding a manual safety to Glock pistols. Early attempts were often complex and expensive, requiring significant gunsmithing skills to install correctly. The debate continued, with proponents arguing for increased peace of mind and opponents citing potential reliability issues and the effectiveness of the existing safety system.
The conversation highlighted a cultural difference in firearm safety expectations between European and American users.
The Glock 46 and the “Fabulated” Manual Safety
The Glock 46, introduced as a submission for the U.S. Army’s Modular Handgun System (MHS) competition, briefly offered a glimpse of a Glock with a manual safety. However, this feature was described as “fabulated,” meaning it was specifically designed for the MHS requirements and wasn’t intended for commercial production. The Glock 46’s manual safety differed significantly from traditional designs, employing a rotary mechanism considered somewhat outdated by some observers.
This model sparked considerable interest, as it represented the closest Glock had come to offering a factory-installed manual safety. Despite the excitement, Glock ultimately decided against releasing a commercially available version of the Glock 46 with the safety, reaffirming their commitment to the simplicity and established safety principles of their existing pistols.
The Glock 46’s safety served as a proof of concept, demonstrating Glock’s capability to incorporate such a feature, but not their desire to do so broadly.
Aftermarket Manual Safety Options
For Glock owners desiring a manual safety, the aftermarket provides several options, though these require modification of the firearm. Two prominent systems are the Tactical Safety System for Glock (TSSG) and those offered by Cominolli. These systems involve machining the frame to accommodate the safety lever and associated components, a process requiring skilled gunsmithing.
The TSSG is designed to fit most Glock models with a slide width of 25.5mm (1.0 inch). Cominolli systems, notably, bear a resemblance to the safety mechanism found on the Glock MHS submission model, potentially indicating a similar design philosophy. Installation typically involves cutting a slot in the frame for the safety lever, alongside the safety’s installation itself.
Costs for these modifications can range around $138 for parts and labor combined, but this can vary depending on the gunsmith’s rates and the complexity of the installation.
Tactical Safety System for Glock (TSSG)
The Tactical Safety System for Glock (TSSG) represents a popular aftermarket solution for adding a manual safety to Glock pistols. Designed for broad compatibility, the TSSG is specifically engineered to fit Glock models featuring a slide width of 25.5mm, or 1.0 inch – encompassing a significant portion of the Glock lineup.
This system introduces an external, thumb-operated safety lever, providing an additional layer of control beyond Glock’s standard three internal safeties: the trigger safety, firing pin safety, and drop safety. Installation necessitates professional gunsmithing, involving precise machining of the Glock frame to create the necessary housing and activation mechanism for the safety lever.
Currently, the TSSG is generally in stock, although backorders are possible due to demand. It offers a relatively straightforward method for users seeking enhanced control and peace of mind, transforming the operational characteristics of their Glock pistol.
Cominolli Manual Safety Systems
Cominolli manual safety systems have emerged as a significant player in the aftermarket Glock safety modification landscape. Notably, the Cominolli design bears a striking resemblance to the safety mechanism incorporated into the Glock military model submitted for trials – leading to speculation about potential origins or shared engineering principles.
The Cominolli system, like the TSSG, adds an external, thumb-operated safety lever to the Glock frame. This addition provides a visible and tactile safety control, supplementing Glock’s inherent three-part safety system consisting of trigger, firing pin, and drop safeties. Installation, however, requires skilled gunsmithing, including frame modification to accommodate the safety lever and its internal components.
Observers have suggested the Cominolli mechanism may be identical or very closely related to the safety found on the military model Glock, indicating a potentially high level of design sophistication and integration. It remains a popular choice for those desiring a manual safety on their Glock.
Installation Process and Costs
Installing an aftermarket manual safety on a Glock is not a simple task and necessitates professional gunsmithing. The process typically involves carefully milling a slot into the Glock frame to accommodate the safety lever. This requires precision to ensure proper function and avoid compromising the frame’s structural integrity. Internal modifications are also crucial, connecting the safety lever to the firing mechanism.
Costs associated with this modification vary considerably. As of 2018, parts and labor were reported around $138, though current pricing is likely higher. Labor constitutes a significant portion of the expense, due to the skilled work involved in frame modification and precise installation. The cost also depends on the chosen safety system – TSSG or Cominolli – and the gunsmith’s hourly rate.
Owners should factor in potential shipping costs if sending the Glock to a gunsmith and the time required for the modification. It’s a substantial investment for adding a feature Glock traditionally omits.
Legal Considerations of Modifying a Glock
Modifying a Glock, particularly by adding a manual safety, introduces several legal considerations that owners must address. Federal law generally permits modifications to firearms, but state and local regulations can significantly restrict or prohibit such alterations. Some jurisdictions may classify a modified Glock with a manual safety as a different type of firearm, potentially subjecting it to stricter regulations.
It’s crucial to verify local laws regarding altered firearms before undertaking any modifications. Certain states may require registration of modified handguns or may outright ban them. Furthermore, modifications could potentially void any manufacturer’s warranty. Owners are solely responsible for ensuring their modified Glock complies with all applicable laws.
Adding a safety doesn’t change the firearm’s classification if it remains a pistol, but due diligence is paramount. Consulting with a legal professional specializing in firearms law is highly recommended to avoid unintentional violations.
Potential Impact on Reliability
Introducing a manual safety to a Glock, a platform historically designed without one, inherently raises concerns about potential impacts on reliability. Glock’s reputation is built on its simplicity and consistent function, achieved through its three internal safeties. Adding an aftermarket safety necessitates machining the frame, potentially weakening it and introducing stress points.
The precision of the installation is critical; a poorly fitted safety can interfere with the trigger mechanism or slide operation; This interference could lead to malfunctions, such as failures to fire or failures to extract. While reputable aftermarket systems like Cominolli and TSSG aim to minimize these risks, they cannot entirely eliminate them.
Increased parts count also introduces more potential failure points. Thorough testing and consistent maintenance are vital for a modified Glock to maintain acceptable reliability levels.
Alternatives to Modifying a Glock
For shooters desiring a manual safety on a striker-fired pistol, several alternatives to modifying a Glock exist. The Smith & Wesson M&P series offers models with factory-installed manual safeties, providing a reliable option without the risks associated with aftermarket modifications. These pistols maintain a similar operational feel to Glocks, appealing to those familiar with striker-fired systems.
Another compelling alternative is the Arex Delta Gen 2, specifically the ‘F’ or ‘Tactical’ variants. This pistol is notable for its Glock magazine compatibility, allowing users to leverage existing magazine investments, while also featuring a true ambidextrous manual safety. This provides a seamless transition for Glock owners seeking this feature.
Choosing one of these alternatives avoids potential reliability issues stemming from altering a Glock’s frame and internal mechanisms, ensuring a dependable firearm straight from the factory.
Smith & Wesson M&P as a Striker-Fired Alternative
The Smith & Wesson M&P (Military & Police) series presents a viable alternative for individuals seeking a striker-fired pistol with a factory-installed manual safety, circumventing the need to modify a Glock. Available in various configurations, the M&P offers a familiar grip angle and operational dynamics, making it an easy transition for experienced shooters.
Unlike Glocks, which rely solely on internal safeties – trigger, firing pin, and drop safety – certain M&P models incorporate a traditional, external manual safety lever. This provides an additional layer of control and peace of mind for users accustomed to this feature. The M&P’s modular design also allows for customization, including adjustable grip panels and sights.
Furthermore, the M&P boasts a robust build quality and a reputation for reliability, making it a dependable choice for concealed carry, home defense, and range use. It’s a quality striker-fired firearm, offering a compelling alternative to a modified Glock.
Arex Delta Gen 2: A Glock-Compatible Option with Manual Safety
The Arex Delta Gen 2 (and Tactical variant) stands out as a particularly attractive option for those desiring a Glock-compatible pistol equipped with a genuine, ambidextrous manual safety. This addresses a key concern for shooters who prefer the positive control offered by an external safety lever, something absent in standard Glock models.
A significant advantage of the Delta Gen 2 is its compatibility with Glock magazines, allowing owners to leverage existing magazine investments. Beyond the manual safety, the pistol features a refined grip angle and improved ergonomics, potentially offering a more comfortable shooting experience for some users. It maintains the striker-fired action familiar to Glock enthusiasts.
While other options involve modifying a Glock, the Arex Delta Gen 2 provides a factory-built solution. It’s a niche offering, but a compelling one for those prioritizing a manual safety without sacrificing Glock magazine compatibility and a similar operational feel.
The Rare Factory Glock Thumb Safety (MHS Submission)
A factory Glock thumb safety remains a remarkably rare sight, largely confined to pistols submitted during the Modular Handgun System (MHS) competition. These prototypes, developed to meet the US military’s requirements, incorporated a manual safety as a key feature, diverging significantly from Glock’s traditional design philosophy.
Reports indicate that only a limited number of these pistols were ever produced, making them highly sought-after collector’s items. The safety mechanism itself bears a striking resemblance to the Cominolli manual safety systems available on the aftermarket, leading to speculation about potential collaboration or influence. It’s believed the mechanism may be the same, or nearly identical.
The MHS submission represents the closest Glock has come to offering a factory-installed manual safety. However, the standard production Glock lineup continues to rely on its three internal safeties, and a commercially available Glock with a thumb safety remains unavailable as of today’s date.
Comparing Aftermarket Safeties: Features and Functionality
Several aftermarket options exist for adding a manual safety to a Glock pistol, with the Tactical Safety System for Glock (TSSG) and Cominolli systems being prominent examples. TSSG safeties are designed to fit most Glock models with a slide width of 25.5mm (1.0 inch), offering broad compatibility;
Cominolli systems, often noted for their similarity to the rare factory Glock MHS submission safety, provide a more integrated appearance. Functionally, both systems aim to provide a positive, tactile engagement and disengagement, offering an additional layer of control beyond Glock’s standard three safeties.
Key differences lie in installation complexity and potential impact on the pistol’s internal components. Some systems require more extensive modification to the frame, potentially affecting reliability. Users should carefully consider the features, installation requirements, and potential trade-offs before selecting an aftermarket safety.
Maintenance and Care of a Glock with an Aftermarket Safety
Maintaining a Glock fitted with an aftermarket manual safety requires diligent attention to ensure continued functionality and reliability. Regular cleaning and lubrication are paramount, focusing specifically on the safety mechanism itself. Pay close attention to the safety lever, its engagement surfaces, and the surrounding frame area where modifications were made.
Inspect the safety for any signs of wear, looseness, or debris accumulation during routine cleaning. Use a quality gun lubricant to keep moving parts functioning smoothly. It’s crucial to verify the safety consistently engages and disengages correctly after each cleaning session.
Because aftermarket safeties involve frame modifications, periodically check for any developing cracks or stress fractures around the installation area. Professional gunsmith inspection is recommended annually to assess the integrity of the modification and ensure the safety remains securely and correctly installed, preserving the firearm’s safe operation.
Future Trends in Glock Safety Features
Predicting Glock’s future safety innovations is speculative, given their historical stance against manual safeties. However, increasing market demand and competitive pressures might prompt a re-evaluation. We could see advancements in internal safety mechanisms, potentially refining the existing three-safety system—trigger, firing pin, and drop safety—for enhanced security.
Another possibility involves integrating smart gun technology, such as biometric locks or RFID chips, offering personalized firearm access. While a traditional manual safety seems unlikely, Glock might explore alternative external controls that provide similar functionality without compromising simplicity.
The rare factory Glock thumb safety developed for the MHS submission hints at internal research. Future designs could incorporate lessons learned from that project, potentially leading to a more integrated and refined safety solution. Ultimately, any changes will likely prioritize maintaining Glock’s reputation for reliability and ease of use.
Adding a manual safety to a Glock presents a trade-off. The primary benefit is increased peace of mind for users accustomed to external safeties, particularly those transitioning from other firearm platforms. Aftermarket options like TSSG and Cominolli offer this functionality, but at a cost.
However, modifications can potentially impact reliability, requiring professional installation and diligent maintenance. The inherent simplicity of the standard Glock safety system—trigger, firing pin, and drop safety—is compromised. Furthermore, the cost of modification, around $138 for parts and labor, must be considered.
Alternatives like the Smith & Wesson M&P or Arex Delta Gen 2, which offer factory-installed manual safeties, provide a viable solution without altering a Glock. Ultimately, the decision hinges on individual preferences, risk tolerance, and a careful assessment of potential drawbacks versus perceived benefits.