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The SIG Sauer 516 is an assault rifle available for use by Ghost Recon.
The family of SIG 516 Tactical rifles is a product of the US-based branch of the international arms maker SIG-Sauer. Intended primarily for the US markets, this family of weapons included two basic semi-automatic versions, intended for the commercial and law enforcement markets. The SIG 516 Tactical rifles are closely patterned after the M16 family of rifles, but with certain improvements such as a piston-operated gas action with an adjustable gas regulator.
The SIG 516 Tactical rifles are gas-operated weapons that use M16 configuration, with aluminum alloy upper and lower receivers assembled by two captive cross-pins. The basic M16-style rotary bolt gas operated action is improved with the addition of the short-stroke gas piston that runs inside handguards, above the barrel. The gas block is equipped with a manually adjustable gas regulator. The trigger unit, manual safety and feed system (magazines, bolt release, etc) are also similar to the M16. The SIG 516 Patrol rifles feature shorter 16-inch barrels and adjustable M4-type buttstocks.
