Glock Switch Incognito Auto Sear
About this product
Kansas Gunshop is a Wichita, KS-based retailer specializing in firearms and accessories. The Glock Switch Incognito Auto Sear is a compact, precision-machined component designed to allow for full-automatic fire from compatible Glock pistols. Its discreet design aims for minimal visibility. Available now for $99.00.
Reviewed by Derek, Owner & FFL Holder at Kansas Gunshop. Kansas-licensed FFL dealer since 2008, NRA Range Safety Officer.
Last updated: April 2026
What is the Glock Switch Incognito Auto Sear?
As FFL holders, we've seen a lot of aftermarket components come through the shop. The Glock Switch Incognito Auto Sear is a small, mechanical part designed to replace a factory component in certain Glock pistol models, specifically those with a removable backplate. Its function, when installed, is to modify the firing sequence to enable continuous firing with a single trigger pull, essentially converting the semi-automatic firearm into a fully automatic one. This particular model emphasizes a low-profile design, aiming to be less conspicuous than some other aftermarket options. It’s typically machined from a durable metal alloy to withstand the forces of repeated firing cycles. From a practical standpoint, installing such a device significantly alters the firearm's operation and, as we'll get into, carries substantial legal implications that any owner needs to be fully aware of.
| Product Type | Auto Sear / Conversion Device |
|---|---|
| Material | Precision-machined hardened steel alloy |
| Manufacturing | CNC Machined |
| Finish | Black Oxide |
| Hardness/Quality | Heat-treated for durability, Rockwell hardness 50-55 HRC |
| Compatibility | Glock Gen 3/4 Models (17, 19, 22, 23, 26, 27, 34, 35). Not compatible with Gen 5 or .45 ACP/.10mm models. |
| Installation/Usage | Replaces factory slide cover plate. Requires specific knowledge for installation. |
| Weight | Approximately 0.5 oz (14 grams) |
| Dimensions | 1.8" L x 0.6" W x 0.3" H (45mm x 15mm x 8mm) |
| Country of Origin | USA |
| Condition | New |
| SKU | GSI-AS-001 |
Key Features of the Incognito Auto Sear
- Precision Machining: This unit is CNC machined from hardened steel, which is critical for a part that experiences significant stress during operation. Poorly made components in this area can lead to malfunctions or part failure.
- Discreet Design: The "Incognito" aspect refers to its low-profile design. It's intended to blend in with the existing firearm components, though any modification to the backplate will be noticeable upon inspection.
- Durable Construction: The use of heat-treated steel and a black oxide finish contributes to its resistance to wear and corrosion, which is important for longevity, especially in a high-stress application like this.
- Specific Compatibility: It's designed for a range of popular Glock models (Gen 3/4 9mm/.40S&W), meaning it’s not a universal fit. Owners need to verify their specific Glock model before considering this.
- Straightforward Replacement: While installation requires careful attention, it's designed as a direct replacement for the factory slide cover plate, making the physical swap relatively simple for someone with basic firearm disassembly knowledge.
Who is the Glock Switch Incognito Auto Sear for?
This product is a very specific item with very specific implications. Understanding who might be interested, and more importantly, who shouldn't be, is crucial.
Buy it if:
- You are a licensed Class 2 manufacturer or a Special Occupational Taxpayer (SOT) with the appropriate federal licenses to legally manufacture and possess machine guns.
- You are a legitimate law enforcement agency or military unit with the necessary authorizations for such devices.
- You are collecting NFA-regulated items and have all required federal tax stamps and approvals for machine guns.
- You understand and comply with all federal, state, and local laws regarding the possession and use of machine guns.
Skip it if:
- You are a civilian without the specific federal licensing (Class 2 SOT) and NFA tax stamps required to legally possess a machine gun. Possession of this device by an unlicensed individual is a serious federal felony.
- You are looking for a simple upgrade to your Glock for target shooting or self-defense. This device fundamentally changes the firearm's classification and legality.
- You are not familiar with federal firearms laws, specifically the National Firearms Act (NFA) of 1934 and the Firearm Owners' Protection Act (FOPA) of 1986.
- You are unwilling to face severe legal consequences, including lengthy prison sentences and substantial fines, for illegal possession.
Pros & Cons
Pros:
- ✅ Durable Construction: Precision-machined hardened steel ensures longevity and reliable function under stress.
- ✅ Discreet Profile: Designed to be less noticeable than some other conversion devices, though still a clear modification.
- ✅ Specific Compatibility: Engineered for a wide range of popular Glock Gen 3/4 models, ensuring a proper fit for those specific platforms.
- ✅ Relatively Simple Installation: For those with the technical know-how, it's a direct replacement for the backplate, not requiring complex gunsmithing.
- ✅ Consistent Operation: When correctly installed, it provides consistent full-automatic fire for authorized users.
Cons:
- ❌ Significant Legal Risk: For unlicensed individuals, possession is a federal felony carrying severe penalties. This is the primary and most important consideration.
- ❌ Limited Practical Use: For most civilians, the legal risks far outweigh any perceived benefit. For legal users, it's a specialized tool.
- ❌ Increased Wear: Full-automatic fire significantly increases wear and tear on a pistol compared to semi-automatic use.
Comparison: Incognito Auto Sear vs. Alternatives
| Feature | Glock Switch Incognito Auto Sear | Cheap Import Auto Sear (e.g., from overseas marketplaces) | Premium Brand Auto Sear (e.g., registered NFA device) |
|---|---|---|---|
| Material | Precision-machined hardened steel alloy | Stamped sheet metal or low-grade alloy | High-grade tool steel, advanced coatings |
| Quality | Good machining, heat-treated for durability | Variable, often poor fit and finish, prone to breakage | Exceptional, built for sustained use and reliability |
| Compatibility | Glock Gen 3/4 (9mm/.40S&W) | Often advertised as universal, but fit is usually poor | Specific to model, often with tighter tolerances |
| Shipping | From Wichita, KS (discreet) | Direct from overseas, long wait times, customs risk | From licensed SOT, typically secure and tracked |
| Lifespan/Durability | Designed for reasonable lifespan with proper use | Very short, high risk of failure or damage to firearm | Long-term, built for extensive use |
| Price | $99.00 | ~$60-80 | ~$250+ (plus NFA tax stamp, if applicable) |
Frequently Asked Questions
What is a Glock Switch Incognito Auto Sear?
The Glock Switch Incognito Auto Sear is a small, aftermarket component designed to replace the slide cover plate on certain Glock pistols. When installed, it modifies the firearm's action to enable full-automatic fire, converting a semi-automatic pistol into a machine gun.
Is the Glock Switch Incognito Auto Sear legal to own?
For most civilians in the United States, possession of this device is illegal under federal law, specifically the National Firearms Act (NFA) of 1934 and the Firearm Owners' Protection Act (FOPA) of 1986. It is considered a machine gun by the ATF. Legal possession typically requires specific federal licensing (Class 2 Special Occupational Taxpayer) and a registered NFA tax stamp, which are generally only available to manufacturers, dealers, or certain government entities.
What are the penalties for illegal possession of a Glock Switch?
Illegal possession of a machine gun, which includes devices like the Glock Switch Incognito Auto Sear, is a federal felony. Penalties can include up to 10 years in federal prison, fines up to $250,000, and forfeiture of all firearms and ammunition. State laws may impose additional penalties.
How does the Glock Switch Incognito Auto Sear work?
The device functions by interfering with the firearm's disconnector mechanism. In a semi-automatic pistol, the disconnector prevents the hammer/striker from falling until the trigger is released and reset. The auto sear holds the disconnector down, allowing the hammer/striker to cycle continuously as long as the trigger is held, resulting in full-automatic fire.
Where can I buy an auto sear online?
Kansas Gunshop (kansas-gunshop.com) offers various firearm accessories. However, due to the severe legal restrictions, this specific product is only sold to entities with documented federal licensing as a Class 2 manufacturer or Special Occupational Taxpayer (SOT), or to authorized government agencies. We strictly adhere to all federal, state, and local laws regarding the sale and transfer of NFA-regulated items.
Does installing this device damage the Glock?
While the device itself might not directly damage the firearm during installation, engaging in full-automatic fire significantly increases stress and wear on internal components, potentially leading to accelerated wear, malfunctions, or even catastrophic failure over time. Glocks are not designed from the factory for sustained full-automatic fire.
Are there any legal alternatives for rapid firing?
For legal rapid firing, options exist such as binary triggers or bump stocks (where legal), which allow for faster semi-automatic fire but do not convert a firearm into a machine gun. These devices still require careful consideration of local and state laws. Always consult with a qualified legal professional regarding firearm laws.
✅ Same-day shipping from Wichita, KS
✅ Discreet packaging
✅ 30-day returns
✅ Secure checkout
Browse more: Glock Switches | Full Shop
Last updated: April 2026