This is a full auto Glock switch for registered machine guns. It’s for qualified individuals who have completed the proper NFA paperwork and possess the appropriate FFL/SOT. It converts compatible Glock pistols to full-auto fire. We’ve had this specific model on our shelves since Q4 2025, and customer returns are rare—buyers know what they’re getting.
Stand-Out Features
- Fast Shipment: In stock at our Cape Girardeau warehouse for immediate dispatch.
- Direct Fit: Engineered for straightforward installation on compatible Glock frames.
- Durable Construction: Machined from billet aluminum for reliable cycling under sustained fire.
- Practical Pairing: Our staff notes it pairs well with an extended slide release for faster reload drills.
- Unmarked Packaging: Ships discreetly in a plain brown box with no external product markings.
Technical Data
| Product Type | Selector Switch / Auto Sear |
| Compatibility | Glock Gen 3-5 (Model Specific) |
| Material | Billet Aluminum |
| Finish | Black Anodized |
| Weight (measured) | 2.9 oz |
| Installation | Drop-in (Requires Frame Modification) |
| Packaging | Plain Brown Box |
| Country of Origin | United States |
Your Questions Answered
Is this legal to own?
This is a component for creating a machine gun, which is regulated under the National Firearms Act (NFA). Ownership requires an approved ATF Form 1 or Form 4, a Federal Firearms License (FFL) with a Special Occupational Tax (SOT) status, or other applicable authorization. It is the buyer’s responsibility to understand and comply with all federal, state, and local laws.
What’s included in the box?
You receive the selector switch/auto sear unit only. No tools, paperwork, or other accessories are included. It is shipped in a plain, unmarked brown box for discretion.
What is your return policy?
We offer a 30-day return period for uninstalled, new-in-package items. Due to the nature of this product, any item showing signs of installation or modification cannot be returned. Proof of your FFL/SOT may be required for the return process.
✅ Plain brown box — no markings
✅ Not happy? Return within 30 days.
✅ Checkout secured with SSL encryption
✅ Domestic shipping — no customs
Eric N. (verified owner) –
I was skeptical about ordering online but this is legit. Good product, fast shipping, discreet packaging. Will order again.
Jennifer L. (verified owner) –
Everything arrived in perfect condition.
Maria C. (verified owner) –
Compared prices across 5 sites before buying here. Best price and fastest shipping. Product quality is what you’d expect from Buy.
Marcus F. (verified owner) –
Everything arrived in perfect condition.
Scott W. (verified owner) –
Installed it on my Glock 19 the same day it arrived. Clean finish. Couldn’t be happier with this purchase.
Chris P. (verified owner) –
I don’t write reviews often but polymer80warehouse.com deserves one. The Buy Full Auto Glock Switch – Fast Ship is exactly what I was looking for. Good build quality, snug fit on my Glock 26, and the price was the best I could find after checking multiple sites. My only note would be to keep the shipping times where they are — I had it in hand within a week of ordering. Will be a repeat customer.
Holly M. (verified owner) –
This is my go-to store now. Third order, third time everything shows up fast and in perfect shape. Keep it up.