Kansas City Gun Engraving Laws: What You Can and Can’t Customize

andy davis • March 24, 2025

Summary

Kansas City gun owners have significant freedom to customize firearms but must follow federal regulations, including specific depth and size requirements for engravings. While slides, frames, grips, and other components can be personalized, modifications to serial numbers and specific official markings remain illegal. NFA items require unique engraving specifications, making professional services like AAC Enterprise valuable for ensuring legal compliance.


Understanding
firearm engraving laws in Kansas City can be confusing for gun owners who want to personalize their weapons. The overlapping federal, state, and local regulations create uncertainty about legal modifications. This guide clarifies precisely what you can and cannot engrave on your firearm in Kansas City.


Many gun owners worry about accidentally breaking the law when customizing their firearms. However, most personalization options remain perfectly legal when performed correctly. The key is knowing which parts can be modified and which elements must remain untouched.


Kansas City follows Missouri's generally permissive approach to firearm customization. Therefore, you have considerable freedom to engrave your firearms, provided you comply with basic federal requirements. This article outlines these requirements and provides practical guidance for legal customization.


Understanding Gun Engraving Kansas City Regulations

Firearm customization is popular among gun owners. However, understanding the rules is essential to avoid legal problems. These regulations exist at federal, state, and local levels. Firstly, federal laws set the baseline for all gun owners. Then, state regulations may add additional requirements. Finally, city ordinances might create local restrictions.


Because of these layered regulations, firearm owners looking for gun engraving Kansas City service must know what's allowed before customizing their firearms.


Federal ATF Requirements for Gun Engraving

The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) sets strict guidelines for firearm markings. These rules apply regardless of local laws. According to ATF regulations, serial numbers must be at least 1/16 inch in size and .003 inch deep. In addition, these markings must be visible and not easily removed.


Tampering with existing serial numbers is a federal felony that can result in up to 5 years in prison. The ATF also requires that any business performing gun engraving as a service must hold a Federal Firearms License (FFL). Unless you're only engraving your own firearms for personal use, you need this license to operate legally.


NFA items like suppressors and short-barreled rifles have even stricter engraving requirements. Although these items are legal in Missouri, they must display specific information including:


  • The maker's name
  • The city and state of manufacture
  • A serial number
  • The model (if designated)
  • The caliber or gauge


Missouri State Laws vs. Kansas City Regulations

Missouri state law prohibits defacing or removing serial numbers from firearms. However, the state has a few additional firearm engraving restrictions beyond federal requirements. Missouri's gun-friendly stance means that most customizations remain legal at the state level.


Kansas City follows Missouri's permissive approach for the most part. Nevertheless, gun owners should be aware that city ordinances can sometimes add restrictions. Although no specific Kansas City regulations limit firearm engraving beyond state and federal laws, this could change. Therefore, consulting with local authorities before making permanent modifications is always advisable.


Concealed carry weapons have no special engraving restrictions in Missouri or Kansas City. Then again, modifications that make a weapon undetectable by metal detectors remain illegal under federal law. Because of this federal prohibition, specific materials and changes are restricted regardless of state or local permissions.


What You Can and Can't Engrave in Kansas City

According to Kansas City law, gun owners have significant freedom to customize and engrave their firearms. The city follows Missouri's permissive stance on gun modifications while still requiring compliance with federal regulations. Because of this balanced approach, many customization options remain available to gun owners. However, certain restrictions still apply to ensure firearm safety and legality.


Legal Engraving Options for Your Firearm

Personalizing your firearm serves several practical purposes beyond aesthetics. Firstly, custom engravings help with the quick identification of your weapon. In addition, personalization creates a sense of ownership and pride. 


Furthermore, thoughtful customization can potentially increase resale value to collectors. As a result, many gun owners choose to add personal touches to their firearms while staying within legal boundaries.


You can legally engrave these firearm parts in Kansas City:


  • Slide/Frame: Custom designs, names, and artwork (avoiding serial number areas)
  • Grips/Stocks: Personal information, decorative patterns, and commemorative text
  • Barrels: Markings and designs that don't affect functionality or safety
  • Magazines: Personal identifiers and decorative elements
  • Dust Covers/Ejection Port Doors: Quotes, symbols, or creative designs
  • Trigger Guards: Simple designs that don't compromise structural integrity
  • Receiver: Custom artwork and text (maintaining required distances from serial numbers)
  • Compensators/Muzzle Devices: Decorative elements that don't modify function


The depth and placement of engravings matter for legal compliance. Therefore, professional engraving services familiar with firearms are recommended. Although DIY engraving is legal, improper execution could accidentally violate federal regulations.

Prohibited Gun Engraving and Modifications

Despite Kansas City's permissive stance, several engraving modifications remain illegal. Firstly, alterations to serial numbers are strictly prohibited under federal and state law. Additionally, certain symbols and markings can create legal issues regardless of intent. Because of these restrictions, gun owners must avoid several types of modifications.


These engravings and modifications are illegal in Kansas City:


  • Serial Numbers: Removing, altering, or obscuring factory serial numbers
  • Law Enforcement Insignia: Unauthorized use of police, FBI, or other official emblems
  • Conversion Instructions: Markings that indicate or facilitate full-auto conversion
  • Counterfeit Manufacturer Marks: Fake logos or production marks from gun manufacturers
  • National Security Agency Seals: Unauthorized use of government agency emblems
  • Selector Switch Markings: Adding "auto" or similar terms to suggest illegal capabilities
  • ATF or Government Agency Endorsements: Markings suggesting federal approval


The penalties for illegal modifications vary based on the violation. However, altering serial numbers is a federal felony carrying up to 5 years imprisonment. Furthermore, modifications suggesting conversion to automatic fire can trigger additional weapons charges. As a result, gun owners should exercise caution when planning customizations.


Important Context for Gun Owners

Beyond the basic rules, gun owners should understand the broader legal context of firearm engraving and customization. The legality of modifications depends on several factors including federal classification of the weapon. 


Additionally, how the engraving is performed matters from a legal standpoint. Therefore, gun owners must consider what they customize and who does the work. This contextual understanding helps prevent unintentional violations that could lead to serious legal consequences.



NFA Items and Special Firearm Engraving Requirements

National Firearms Act (NFA) items have stricter engraving requirements than standard firearms. These regulated items include suppressors, short-barreled rifles (SBRs), short-barreled shotguns (SBSs), and any other firearms classified as NFA under federal law. Because of their specialized status, these items must follow precise marking specifications.


For NFA items, engravings must include:


  • The manufacturer or maker's name
  • The city and state of manufacture
  • Model designation (when applicable)
  • Calibre or gauge
  • Serial number


The placement of these markings is also regulated. All required information must be engraved on the receiver or frame of the weapon. Furthermore, the depth requirement is more specific - the engraving must be at least .003 inches deep. In addition, the height requirement is stricter, with characters needing to be at least 1/16 inch in height.


Form 1 builders who legally manufacture their own NFA items must engrave their own name (not a trade name) and the city and state where the item was manufactured. Therefore, DIY NFA builders need access to professional-grade engraving equipment or services to meet these requirements.


DIY vs. Professional Engraving Legal Considerations

DIY engraving is legal for personal firearms in Kansas City. However, amateur engraving brings several potential issues. Firstly, improper depth or placement could accidentally violate ATF requirements. Additionally, mistakes made during DIY engraving are permanent and could damage your firearm.


Professional engraving services offer several advantages:


  • Legal expertise: FFL holders understand current firearm regulations
  • Precision equipment: Professional laser engravers achieve required depths consistently
  • Quality assurance: Professionals can guarantee their work meets legal standards
  • Documentation: Service providers can supply proof of compliant modifications


Working with an FFL-holding business provides additional legal protection. These licensed professionals stay updated on changing regulations. Furthermore, they maintain records that can prove your modifications were performed legally. Therefore, using professional services creates a paper trail that could be valuable if questions arise about your firearm's modifications.


The cost difference between DIY and professional services often becomes insignificant when considering potential legal issues and firearm damage. Although home engraving kits are available, they rarely achieve the precision and depth required for legal compliance, especially for NFA items.

Professional Gun Engraving Services at AAC Enterprise


AAC Enterprise provides professional firearm engraving that meets all federal, state, and local requirements for Kansas City gun owners. Our FFL-licensed technicians understand the complex regulations surrounding firearm customization. Because of our expertise, we ensure that all engravings comply with ATF guidelines while achieving your desired aesthetic. 


Additionally, we specialize in proper depth and placement for serial numbers and NFA item requirements. Therefore, gun owners can confidently customize their firearms without legal concerns. Furthermore, our detailed documentation provides proof of compliant modifications for your records.


We work with all firearm types, including pistols, rifles, shotguns, and NFA items requiring special documentation. Contact AAC Enterprise today for a consultation on your firearm customization project and experience the difference that professional engraving makes for legal compliance and visual appeal.

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