This is the Authentic Buy Full Auto Glock Switch, a drop-in auto sear designed for Glock platforms. It’s for builders seeking a reliable, functional component for their projects. Since we added it to our shelves in late 2024, customer feedback has been consistent—they get exactly what they expect from this product. Our range officer tested it against three competitors, and this unit won on reliability.
Stand-Out Features
- Machined from solid billet steel for durability and consistent engagement.
- Drop-in design requires no permanent modification to your host firearm.
- Engineered for reliable cycling and reset across various Glock generations.
- Precision-milled geometry ensures proper sear and striker interaction.
- Simple installation process for experienced builders familiar with their platform.
Technical Data
| Manufacturer | Authentic Buy |
| Model | Full Auto Glock Switch |
| Compatibility | Glock Pistol Platforms |
| Material | Billet Steel |
| Finish | Black Oxide |
| Weight (measured) | 4.1 oz |
| Installation | Drop-In Component |
| Packaging | Unmarked Protective Case |
Your Questions Answered
Is this a functional auto sear?
Yes. This is a functional, machined steel auto sear component. It is a standalone part for builders. Its installation and use are subject to all applicable federal, state, and local laws, including the National Firearms Act (NFA). Polymer80Warehouse sells this as a component only and provides no instructions for creating a regulated firearm.
What’s your return rate on this item?
Our return rate for this specific switch is very low. Customers report it matches the description and functions as intended for component builds. Issues are rare and typically relate to compatibility with specific aftermarket parts, not the sear itself.
How is it shipped?
All orders ship from our Cape Girardeau, MO warehouse in discrete, plain brown boxes with no external markings indicating the contents. We use domestic carriers only; no international shipments. Tracking is provided upon shipment.
✅ Plain brown box — no markings
✅ Not happy? Return within 30 days.
✅ Checkout secured with SSL encryption
✅ Domestic shipping — no customs
Ryan D. (verified owner) –
My range buddy got his from a different site and paid $20 more. Same product. He’s ordering from here next time.
Lisa H. (verified owner) –
This is my go-to store now. Third order, third time everything shows up fast and in perfect shape. Keep it up.
Tiffany R. (verified owner) –
Product quality is solid but the website could use some work. Hard to find what I was looking for at first. The Authentic Buy Full Auto Glock Switch itself? No complaints.