The SIG SG 563, introduced at IWA 2025, stands out with its innovative design merging the classic SG 550 receiver with a fully AR-compatible lower. This integration provides AR-style ergonomics, including a 45-degree safety selector, and fully ambidextrous controls. A key feature is its magazine versatility, accepting both AR-15 and original SG 550 magazines via a removable adapter, both of which drop free.
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