Description
This SCT Manufacturing mag catch is a straightforward replacement part for Gen3 Glock pistols. Built from their proprietary polymer blend, it matches the durability and performance specs you get from the factory OEM part while offering an aftermarket option for builders and those who need a spare.
Why This Mag Catch Works for Gen3 Builds
The angled face of this mag catch is engineered for ergonomic reload speed and comfort. Whether you're working on a compact build or a full-size platform, this part functions as a direct drop-in without fuss or fitting. The black polymer construction keeps things lightweight while maintaining the strength needed for reliable magazine retention and release through extended shooting.
Compatibility Across Gen3 Models
This catch works with both compact and full-size Gen3 frames, covering the most common builds out there. That means whether you're putting together a G19 clone or a G17 build, you have one part that spans both platform sizes. SCT's parts are tested to meet or exceed OEM specifications, so you're not sacrificing quality for a lower cost option.
A Practical Choice for Builders
Keeping a spare mag catch on hand makes sense if you build or maintain multiple Gen3 pistols. Installation is simple—just a small flat-blade screwdriver needed—and the part seats securely in the frame. Since this is injection-molded from SCT's proprietary polymer, it resists wear and maintains its hold over time.
Key Specifications
- Manufacturer: SCT Manufacturing
- Manufacturer Part Number: 210190004
- UPC: 850055982321
- Compatibility: Glock Gen3 Models 17, 19, 22, 23, 26, 27, 31, 32, 33, and similar Gen3 platforms
- Fitment: Compact and Full-Size configurations
- Material: Proprietary polymer blend
- Color: Black
- Type: Magazine catch
- Installation: Drop-in replacement, flat-blade screwdriver required
- Design Feature: Angled face for ergonomic reloading
What’s Included
- SCT Manufacturing 210190004 polymer magazine catch
Frequently Asked Questions
Will this mag catch work with both compact and full-size Gen3 frames?
Yes. This part is designed to fit both compact and full-size Gen3 configurations, making it versatile for various build sizes. It's drop-in compatible with standard Gen3 platforms like the G17 and G19.
How does this compare to OEM Glock mag catches?
SCT's parts are engineered to meet or exceed OEM specifications. This polymer catch performs the same function as factory parts but gives you an aftermarket option. Many builders use SCT components successfully in custom builds and spare parts kits.
What tools do I need to install this mag catch?
You only need a small flat-blade screwdriver. The installation process is straightforward: disengage the mag catch spring from the existing catch, slide the old part out, then install the new one by gently lifting the spring out of the way and seating the new catch in place.
Is this mag catch made in the USA?
Yes. SCT Manufacturing is a US-based company located in Hudson, Wisconsin, and has been manufacturing OEM and aftermarket parts for the firearms industry since 2013.




Reviews
There are no reviews yet.