Introducing the Springfield Armory Echelon Pro Comp
Springfield Armory isn’t sleeping on the Echelon. They have now announced the introduction…
Springfield Armory isn’t sleeping on the Echelon. They have now announced the introduction…
SIG Sauer has expanded its SIG516 G3 lineup with the introduction of two…
Here’s a fun yet practical way to put a can on your pocket…
Drills. We use that word universally in the firearms training world. Before I lay out…
Magpul introduced its DAKA Grid Organizer system in 2023, but I hadn’t really become aware…
Setup & Shooting Instructions This drill is executed with a carbine at 50 yards. The…
If you shoot a 9mm 1911, you’ll be interested in Check-Mate Magazines’ new Double-Stack Ultra-Hi Capacity magazine. It is designed to redefine standards in the industry and deliver an unparalleled combination of capacity, reliability, and compactness for double-stack 1911 enthusiasts.
Check-Mate responded to the demand for increased capacity by packing 19 rounds into the profile of a standard 17-round 9mm 1911 magazine. This magazine also maintains a flush-fit design to ensure seamless integration for your double-stack 1911 without compromising size or handling.
Backed by more than a decade of double-stack manufacturing expertise, Check-Mate says it has leveraged feedback from the largest brands and noted shooters in the firearms industry to develop what the company calls the most reliable and technologically advanced magazine on the market today.
Key features include the aforementioned 19-round capacity in a 17-round magazine’s profile, offering max firepower without added bulk or length, and an improved feeding angle to feed both hollow-point and FMJ ammunition more reliably, with a focus on consistent performance.
Check-Mate’s UHC 1911 magazine boasts patent-pending spring and follower technology designed to increase slide lock-back power by 50% to guarantee smooth operation and reliability all the way to the last round.

It is also built tough, with advanced materials, an all-metal aluminum basebad, and a steel retainer for durability and longevity. Each is proudly made in the USA.
Check-Mate Magazines
1911 Double-Stack UHC 126mm Magazine
MSRP: $85
URL: checkmatemagazines.com
The wait is finally over—UN12 Issue 25 is now on sale and on newsstands across the country! You can find the latest issue at major retailers like Barnes & Noble and…
Magpul bipods and the M-LOK attachment system have been trusted worldwide for long years. But quickly attaching (or detaching) a bipod to or from an M-LOK-enabled firearm wasn’t…
Midwest Industries is introducing what it calls the “next generation” of its AR handguard offerings—the Combat Rail HD. This cutting-edge handguard aims to elevate MI’s popular Night Fighter…
We had to do a double-take when we first saw a Chiappa Rhino. It’s probably one of the most unique revolver designs we’ve seen, with the low-set barrel…
The Roadie® 24 Hard Cooler is a fresh take on a tried-and-true YETI favorite. It’s 10% lighter, holds 20% more, and performs 30% better thermally than its legendary…
This accessory system allows you to quickly swap feet on your bipod sans tools to allow you to adapt to different shooting surfaces, environments, and situations. You can…
© 2026 UN12 Magazine
© 2026 UN12 Magazine
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