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The bolt-action Spanish FR-8 was a stopgap firearm, thrown into service by the Spanish when they were already moving toward the 7.62x51 mm NATO-chambered Cetme rifle. The FR-8 shares the later rifle's chambering, and actually appears to be a gas gun, though the tube is simply storage for a cleaning rod. For more on this unique piece of history, check out this "I Have This Old Gun" segment from a recent episode of American Rifleman Television.
In this episode, the American Rifleman staff is on the range with a rimfire rifle that’s designed to excel in competition. This is the Bergara BMR-X Steel, a bolt-action that offers some match-grade features at a price that won’t break the bank.
While the roller-delayed blowback mechanism has proven reliable in platforms like the Heckler & Koch G3, Zenith Firearms has taken this innovative operating system and paired it with a modern, AR-style feature set in its MRDS.