High-Security Lock Services

Locksmith in Overland, MO – Serving St. Louis & St. Charles Counties

Protecting Your Home and Business With

Advanced Locking Systems

Standard locks can only go so far in protecting your property. For true peace of mind, you need locks designed to resist picking, bumping, and unauthorized duplication. At AA Key and Lock Services, we offer a full range of high-security lock solutions backed by trusted brand names such as Medeco, Primus, Mul-T-Lock, and more.


Whether for your home or business, our locksmiths provide expert installation and service to ensure your property is as secure as possible.

  • Residential High-Security Lock Installation

    Keep your home safe from intruders with advanced locks designed for maximum protection. Our locksmiths can replace your existing locks with high-security models that resist tampering and unauthorized duplication.

  • Commercial High-Security Solutions

    Businesses face unique security challenges. We provide scalable high-security lock systems for offices, retail stores, warehouses, and more—ensuring only the right people have access.

  • Key Duplication on Your Terms

    With patented key control systems, your keys cannot be duplicated at a hardware store. Copies are only made with your permission, keeping you in full control of who can enter your property.

  • Professional Installation & Service

    We don’t just sell locks—we install and maintain them for long-term performance. Our locksmiths service St. Louis and St. Charles counties with fast, professional lock replacement and repair.

Close-up of a black door with a silver keyhole and a portion of the door frame visible.
Hand opening a wooden cabinet door to reveal a black safe with a keypad.
Person in red gloves using a screwdriver to install a door lock.

Why Choose High-Security Locks?

Unlike standard hardware store locks, high-security locks are designed to provide enhanced protection against forced entry and manipulation.


Benefits include:


  • Key Control – Keys can only be duplicated when you authorize it


  • Bump-Proof Design – Engineered to prevent lock bumping attacks


  • Pick-Resistant – Advanced technology deters picking and drilling


  • Access Control – Manage and restrict access with patented keyways


  • Long-Term Security – Ideal for homes, apartments, and commercial properties