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.
Ruger boosted the profile of the 5.7x28 mm cartridge with the launch of its Ruger-57 in 2020.
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.
CMMG expanded its collection of 5.7x28 mm offerings with an AR-15 conversion package in 2020.
While the 5.7x28mm cartridge has seen a resurgence in 2020, there have been attempts to make it into the mainstream before.
The innovative CMMG Mk 57 conversion kit allows AR owners to get in on the current 5.7x28mm craze.