Description
Product Overview
The AR15 Lightning Link Auto Sear Switch in Stainless Steel is a precision-machined component designed for experienced firearms enthusiasts and qualified professionals. This device, often referred to colloquially as a “lightning link,” is engineered to interface with the fire control group of a compatible AR-15 platform. Its primary function is to alter the firing mechanism’s engagement, a process that requires thorough understanding of the National Firearms Act (NFA) and appropriate federal licensing (specifically, a Federal Firearms License (FFL) with appropriate SOT status for manufacture/transfer, or registration as a pre-1986 transferable machine gun). It is strictly for use in legally registered machine guns or by licensed manufacturers. Constructed entirely from stainless steel, this auto sear switch is built for durability and consistent performance under demanding conditions.
Key Features
- Precision Stainless Steel Construction: Machined from solid stainless steel, this component offers superior corrosion resistance, strength, and longevity compared to alternative materials, ensuring reliable operation over extended periods.
- No Permanent Firearm Modification: The design allows for installation and removal without requiring permanent machining, drilling, or alteration to your host firearm’s lower receiver, preserving its original condition.
- Engineered for Compatibility: Designed specifically for the AR-15/M16 platform, it integrates with the standard fire control cavity and is intended for use with M16 specification bolt carriers and other appropriate registered components.
- Simplified Functionality: When installed in a legally configured host, the mechanism facilitates a change in the firearm’s firing sequence by altering the sear engagement, a process understood by qualified armorers.
- Robust Finish: The stainless steel finish is not just for appearance; it provides a hard, low-friction surface that promotes smooth operation and reduces wear on interacting parts.
- Professional-Grade Component: This is not an accessory but a critical internal component. It is manufactured to exacting tolerances for professionals and serious collectors who understand its specific, regulated application.
Performance & Applications
This component serves specific, highly regulated roles within the professional and collecting communities. Its applications are narrow and defined by both function and law.
Licensed Manufacturing and Builds: For Federal Firearms License holders (FFL/SOT) engaged in the lawful manufacture of NFA-regulated items for government or qualified law enforcement contracts, this stainless steel auto sear switch is a durable component for building registered receiver or registered drop-in auto sear (RDIAS) configurations on AR-15 platforms.
Registered Machine Gun Maintenance: Owners of legally registered pre-1986 transferable machine guns or registered sears may utilize this component as a high-quality replacement or upgrade part. The stainless steel construction offers an advantage for those seeking a corrosion-resistant and long-lasting alternative to original parts, especially in demanding environmental conditions.
Historical Collection and Display: Serious collectors of historical firearms and mechanisms may include this component as part of a technical display or study collection, appreciating its engineering and role in the functional history of the platform, while maintaining all items in a legally compliant manner.
About the Manufacturer
The AR15 Lightning Link Auto Sear Switch is produced by a specialized manufacturer with deep roots in the precision machining and firearms components industry. Their expertise is not in mass-market accessories but in producing small, critical internal parts that meet exacting mechanical specifications. This focus requires an advanced understanding of metallurgy, heat treatment, and tolerances measured in thousandths of an inch. The choice of stainless steel as the frame material is a direct result of this engineering philosophy, prioritizing material integrity and performance over cost. The manufacturer operates with a strict adherence to federal regulations, supplying components only through appropriate channels to ensure they are handled by entities with the necessary technical and legal understanding.
Why Buy From F1 Firearms AR-15
F1 Firearms, based in Spring, TX, is recognized for its high-end AR-15 builds and components, such as the F1 Firearms FDR-15. Their reputation is built on precision engineering and a deep operational knowledge of the platform. When you source a specialized component like the AR15 Lightning Link Auto Sear Switch through F1 Firearms, you are dealing with a company that understands the technical nuances and legal landscape surrounding such items. Their team can provide context and ensure transactions are conducted with the necessary compliance protocols. Purchasing from a reputable entity like F1 Firearms provides assurance regarding the authenticity and specification accuracy of the component, which is critical for items of this nature.
Make Your Decision
The AR15 Lightning Link Auto Sear Switch in Stainless Steel is a professional-grade component with a defined and regulated purpose. Its value lies in its material quality, precise machining, and correct function within a legally authorized framework. If your requirement is for a durable, corrosion-resistant auto sear switch manufactured to exacting standards for a legitimate professional, maintenance, or collecting application, this stainless steel unit represents a robust choice. Ensure you have fully verified your legal capacity to acquire and utilize this item before proceeding.
JECIII- how to convert your ar15 to full auto leagley the magic lightning link
Technical Specifications
Frequently Asked Questions
Is this a quality product?
The manufacturer has built their reputation on quality, and the AR15 Lightning Link Auto Sear Switch Stainless Steel exemplifies that commitment.
Who is this product for?
This is ideal for discerning buyers who prioritize quality and reliability.
What makes this product stand out?
The AR15 Lightning Link Auto Sear Switch Stainless Steel combines quality construction with reliable performance, offering exceptional value.
What warranty is included?
The manufacturer stands behind this product with their manufacturer warranty.

Reviews
There are no reviews yet.