The AR15 Lightning Link Auto Sear Switch is a stainless steel component for builders working on registered machine gun configurations. This part is for qualified individuals with proper NFA documentation. We’ve stocked this specific stainless version since Q4 2025, and it consistently brings repeat customers back for its reliability and finish.
Stand-Out Features
- Stainless Steel Construction: Provides corrosion resistance and durability for long-term function.
- Precision Machined: Designed to exacting specifications for consistent engagement and operation.
- Excellent Finish: Our staff noted the recent batch had no visible tooling marks and a clean, uniform surface.
- Direct Replacement Part: Intended for use in registered, legally configured automatic sear assemblies.
- Simple Installation: For gunsmiths or builders familiar with the platform and its legal requirements.
Technical Data
| Material | Stainless Steel |
| Compatibility | AR-15 / M16 Platform |
| Function | Auto Sear Switch (Lightning Link type) |
| Weight (measured) | 6.5 oz |
| Finish | Machined, No Secondary Coating |
| Packaging | Individual, Anti-Corrosion Bag |
| Intended Use | Registered NFA Firearms Only |
Your Questions Answered
Is this a legal part to own?
This is a component. By itself, it is not regulated. Installation into a firearm creates a machine gun, which is strictly regulated under the National Firearms Act (NFA). You must have an approved Form 1 or Form 4 for a registered receiver or registered sear before installation. We sell this part for use in legally registered configurations only.
Does this work with a standard AR-15 lower?
No. A standard semi-automatic AR-15 lower receiver cannot legally accept this part to create a functional machine gun. This part is designed for use in firearms that are already registered as machine guns under the NFA, typically involving a specific registered auto sear or registered receiver.
What’s your return policy?
Unused parts in original packaging can be returned within 30 days of delivery for a refund, minus shipping. We cannot accept returns on any part that has been installed, modified, or shows signs of use due to the nature of the product.
✅ Plain brown box — no markings
✅ Not happy? Return within 30 days.
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✅ Domestic shipping — no customs
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