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Review: CMMG Mk 57 Conversion Kit

The innovative CMMG Mk 57 conversion kit allows AR owners to get in on the current 5.7x28mm craze.

The 5.7x28mm: History & Design

While the 5.7x28mm cartridge has seen a resurgence in 2020, there have been attempts to make it into the mainstream before.

SHOT Show 2020: Ruger-57

Ruger boosted the profile of the 5.7x28 mm cartridge with the launch of its Ruger-57 in 2020.

First Look: CMMG 5.7x28 mm AR Conversion

CMMG expanded its collection of 5.7x28 mm offerings with an AR-15 conversion package in 2020.

First Look: Speer Gold Dot 5.7x28 mm

In conjunction with several new 5.7x28 mm guns on the market, Speer Ammo rolled out an all-new Gold Dot load in the high-speed chambering.

Video: 5.7 mm Johnson Spitfire Carbine

Watch this "I Have This Old Gun" Segment from a recent episode of American Rifleman TV to learn about the unique 5.7 MM Johnson Spitfire Carbine.

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