December 16, 2025
Description
These sleeves have been pictured in several of my holsters and always have a few comments about when are these dropping. Here they are.
The Mapgul 21rd Glock Magazine is a USPSA legal 21rd mag that's out there for $20, no extensions needed. This makes it an extremely useful, cheap, upgrade for competition shooting where you really want 20+ rds. However, with no extension, it looks odd in the gun, and grabbing it on the fly is more difficult. That's what this spacer is for. Designed for the Ruger RXM compact and full size frames originally, I've also tested it in Glock 19 and Glock 17 models where it fits great. Add a bit of texture and grip to your spare mags!
I would print in PETG so they can handle the summer heat. No supports or hardware needed. The G19 version has small nubs that pop into the round count indicators on the mags. The G19 version is different because those nubs are visible enough, so instead it's simply a very tight fit. Print away, and go. I've been running the G19 versions for awhile now and they've been excellent. Ruger finally dropped the full size version so I designed the right sleeve for it, and they've been great too.
These are being uploaded because of your requests and support, so please feel free to leave further requests, comments, critique, etc. Thanks!
License:
Standard Digital File License