The Sig Sauer SG 563 SB, a new SBR variant in the SG 560 series, was unveiled at IWA 2025. It features a 9-inch barrel, a long-stroke piston system with a 4-position adjustable gas block, and ambidextrous controls. A key innovation is its removable magwell adapter, allowing compatibility with both P-MAGs and traditional Swiss 'rock-and-lock' magazines.
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