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Key terms: sg rifle sight bolt swiss barrel gp carbine variants folds receiver grenade piston firearm bipod sig sg swiss arms handguards twist rate swat kern commando mounting trigger bayonet adjustable sniper cartridge notch breech stanag polymer diopter locking picatinny rail bolt carrier rear sight accessories sturmgewehr long barrel flash suppressor telescopic sight very similar small numbers assault rifle recoil spring rifle grenades windage and elevation grenade launcher rifling twist rate Search external links cited by footnotes on Wikipedia page SIG SG 550: |
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