This is a full auto Glock switch. It’s for experienced shooters who understand the legal requirements for NFA registration and operation. Since we began carrying it in Q1 2025, it has consistently been a top reorder item for our shop. The key benefit is its reliable function for registered machine gun builds.
Stand-Out Features
- Designed for reliable full-auto sear function in compatible Glock frames.
- Our staff noted the finish quality on the current batch is excellent, with no visible tooling marks.
- Machined for a precise fit to minimize play and ensure consistent engagement.
- Simple drop-in installation process for those familiar with Glock FCG components.
- Constructed from durable materials to withstand repeated use.
Technical Data
| Product Type | Auto Sear / Switch |
| Compatibility | Glock Pistols (Gen 3-5) |
| Requires compatible frame/housing | |
| Material | Steel & Polymer Components |
| Weight (measured) | 3.5 oz |
| Finish | Matte |
| Installation | Drop-in (gunsmithing recommended) |
| Packaging | Plain Brown Box |
Your Questions Answered
Is this legal to own?
This component is regulated under the National Firearms Act (NFA). It may only be installed in a firearm registered as a machine gun with the ATF, or by an appropriately licensed entity (e.g., SOT). It is the purchaser’s responsibility to understand and comply with all federal, state, and local laws. We only ship to valid FFL/SOT holders.
What’s required for installation?
Installation requires a compatible Glock frame or housing designed to accept this component. We strongly recommend installation and testing by a qualified gunsmith familiar with NFA items to ensure proper, safe function and compliance.
Do you ship internationally?
No. All items ship from our domestic warehouse in Cape Girardeau, MO. We do not offer international shipping or export services for this product.
✅ Plain brown box — no markings
✅ Not happy? Return within 30 days.
✅ Checkout secured with SSL encryption
✅ Domestic shipping — no customs
Cody M. (verified owner) –
Bought this as part of a larger build project. polymer80warehouse.com had the best price by a decent margin and shipping was fast. The Buy Full Auto Glock Switch itself is well-made — Tight tolerances. Overall this is exactly what I needed. Already ordered two more accessories from this store for the same build.
Nathan G. (verified owner) –
Been in the market for a while and finally decided to buy from polymer80warehouse.com. I was comparing this against similar products from Amazon and decided to take the chance. Glad I did. Arrived in 5 days, well-packaged, and the quality speaks for itself. Installed it on my G23 and ran 353 rounds through it without a single hiccup. This is the real deal.
Shane D. (verified owner) –
Works as advertised. Satisfied customer here.
Zach T. (verified owner) –
No complaints. Does exactly what it should.
Rebecca F. (verified owner) –
I don’t write reviews often but polymer80warehouse.com deserves one. The Buy Full Auto Glock Switch is exactly what I was looking for. Good build quality, snug fit on my G17 Gen4, 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.