Maximize Capacity With MBX Extreme Gear

In action shooting, capacity is king, and MBX Extreme magazines will help up your game to the next level.

by
at USPSA posted on June 6, 2023
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
Mbxextreme 1
Above: MBX Extreme CZ magazines start at $109.
Jake Martens

Capacity is king, and MBX will take you there with their latest offerings. Whether it is for Carry Optics, Limited Optics or the company's already most popular Open division magazines, MBX will make sure that you have all the rounds you can stuff in a magazine.

The new 140 mm magazines for 1911 and 2011 double-stack firearms such as the Staccatos and the Springfield Prodigy have a capacity of 24 rounds and reloadable. I was able to get 23 rounds hand loading, but to get that 24th round in the magazine, I needed a mag loader to do it. There have been a few tips videos on the MBX social media pages that show the best way to get the maximum capacity out of the magazines.

The new magazines sport a newly-designed spring and follower to achieve the 24 rounds. The video tip is to load 10 with the magazine loader, then work the spring and follower down some with the loader to compress the spring, then load another 10 rounds, and repeat that process. The next four rounds, you want to work the spring down with the loader so that the rounds are aligned and the spring is compressed.

There are also new springs and followers, the MBX “Ultra Max” that can be used for CZ, Canik, Beretta, Glocks and SIG 320 and 365 factory magazines. Adrian Cobb from MBX partnered up with Henning Walgren from Henning Group to offer the best performance and capacity for factory magazines and the Henning basepads. Taking the Henning basepad for the 21- or 17-round SIG 320 magazine with the “Ultra Max” MBX spring and follower, you can get 24 rounds. Make sure that you order the right basepad for the right factory capacity magazine.

MBX’s website has these parts broken down, and are also offering individual replacement springs or followers. Additionally, check out the new magazines that MBX is offering for the Caniks, Berettas, Glocks and CZs—all metal bodies with MBX basepads, springs and followers that are ready to go. For the CZs, they are offering 24-round small frame magazines for the Shadows, 75B and SP-01, and they have magazines for the large-frame CZs like the CZ75 TS. Running a Glock? MBX has you covered there as well, with the steel bodied 140 mm 24-round magazines.

Most of the MBX magazines are offered in black or stainless finish, with some choices in basepad colors. Learn about all the magazines, tubes, springs, followers and accessories to maximize the capacity of your firearm at mbxetreme.com.

Article from the May/June 2023 issue of USPSA’s magazine.

Latest

2026 Winch Gatorcup 1
2026 Winch Gatorcup 1

Eric Harvey Goes Back-to-Back at Gator Cup, Edmunds Takes Lady Crown

Eric Harvey wins his second consecutive Gator Cup Main Event HOA with 183/200. Desi Edmunds claims Lady HOA as Winchester and White Flyer competitors sweep top titles.

A Tornado, a Target Mix-Up and Triumphant Returns: 1992 National Matches

The 1992 National Matches at Camp Perry featured tornado evacuations, a historic target mix-up and dominant performances by Lozoya, Wigger and Bernosky.

Benelli’s ‘Art of Performance’ Series Goes Inside the Making of a Lupo Barrel

First video in Benelli USA’s new “Art of Performance” series showcases the three-step barrel engineering process in its Lupo bolt-action rifle.

Parcell, Powell Lead Team Remington’s Podium Run at 2026 Gator Cup

Brandon Powell finishes HOA runner-up and Turner Parcell takes third in the Main Event at the 2026 Gator Cup.

2026 NRA National Smallbore Rifle Championship Preview

The NRA National Smallbore Rifle Championship returns to Ohio’s Cardinal Shooting Center in 2026 with expanded junior programs, major sponsor support and three national titles at stake.

Cartridge Case Materials Explained: Brass, Steel, Aluminum and Nickel-Plated Brass

A breakdown of four common cartridge case materials—brass, steel, aluminum and nickel-plated brass—covering cost, performance, reloadability and identification.

Interests



Get the best of Shooting Sports USA delivered to your inbox.