The Ensio Arms KAR-21 is a modern Finnish service-style rifle featuring a robust 7-lug rotating bolt and a short-stroke gas piston system. Its standout feature is the dual-caliber capability, allowing it to chamber both 5.56 NATO and 7.62 NATO rounds by simply swapping magazines (AR-15 for 5.56, AR-10 for 7.62). The rifle is designed for durability, with specific attention paid to cold-weather reliability.
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