This entry details the M21/XM25 sniper rifle system, a variant of the M14, focusing on its practical accuracy out to 800 yards. It covers technical specifications, historical evolution, performance analysis under adverse conditions, and comparisons to modern sniper platforms. The content emphasizes the rifle's demanding maintenance requirements and the expertise needed for its effective operation, reflecting the high authority of the 9-Hole Reviews channel.
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![M21 [M14 Sniper Variant] to 800yds: Practical Accuracy (XM21 | M14 SSR | XM25 | M25 SWS)](https://i.ytimg.com/vi/9iOoc_1lLSo/hqdefault.jpg)
