MBX DEFENDER SERIES ULTIMATE CARRY MAGAZINES
FOR GLOCK PISTOLS




MBX Defender Glock 19 & 17 New Spring and Follower

April 2023 we launched our NEW updated Spring and new Follower combination for the MBX Steel Glock Defender G19 & G17 Magazines. Now allowing for higher round capacity, our G 19 now holds up to 17 rounds and the G17 up to 20 rounds.

We do recommend using a loading device such as (Uplula) when new to help set the springs memory and obtaining maximum capacity. As with all performance magazines this will aid break-in to help achieve a smooth and much easier to load magazine.

G19 16-17rds
G17 19-20rds




For MBX Extended Steel Glock Magazines click here
*Basepad hex set screw DO NOT ADJUST DAMAGE WILL OCCUR.
Slide pin is designed to slide down to remove and up to retain no Allen wrench needed.
MBX has grown to become the "Gold Standard" in the Competition Magazine World. With our Proven Durability, Extreme Reliability, Innovative tube and Follower design, and Capacity which exceeds ALL conventional magazines.MBX have taken the technology and attributions we gained in competition design and incorporated them into the finest, highest capacity and most reliable personal defense magazines available in the world. We offer with confidence a life time warranty on MBX Defender tubes.

Defender Series Magazine Information

1. Defender tubes are manufactured out of USA 410 stainless steel we use thick material than other manufacturers this is the foundation for performance and reliability


2. MBX tubes are heat treated to 1750 degrees and drawn to temper for extreme durability


3. Our unique tube design allows for “Nose up” consist fast and 100% reliable round presentation


4. MBX innovative tube and follower design have the highest capacity and performance available in the 2011 style guns


5. We partnered with Wolff gun springs to design and built specific MBX Defender series springs that stack and allow maximum capacity with maximum reliable.


6. Our tool-less billet aluminum base pad uses the proven slide pin. Simply push down to remove base pad /push up to lock base pad back on for the easiest maintenance


Nitride/DLC/Tin and other surface coatings are ALL subject to wear upon repeated contact. For Maintenance on the exterior we recommend wiping with very lightly oiled cloth.