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Zenith Firearms added blog Other
2026-05-21 06:34:25 -

The Differences Between Direct Gas Impingement and Zenith Firearms’ MRDS Platform’s Roller-Delayed Blowback
The vast majority of AR style rifles, including AR pistols, or ARPs, are actuated by an operation known as direct gas impingement. Some, such as the MRDS platform used by Zenith Firearms in models like the ZF-56 and ZF-300, utilize a modern roller-delayed system, which gives the MRDS its name. But how do these differ, and what is the material impact? It’s bigger than you think....

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Zenith Firearms added blog Other
2026-07-22 07:06:10 -

The MRDS Platform: Spotlighting the ZF-350
There are some states, particularly flat states in the Midwest, where hunting, especially for deer, is not permitted with necked rifle cartridges. The rationale behind the laws prohibiting necked cartridges is that, typically, straight-walled rifle cartridges fire bigger, heavier bullets at slower velocities, which have more limited ranges than their necked-cartridge counterparts. So, in...

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