Jul 9, 2013 · The P556 is built on SIG Sauer’s well-respected SG 550 platform. The 550 itself employs a long stroke piston-operated rotating bolt locking mechanism reminiscent of Mikhail Kalishnakov’s original AK-47 design.

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P556® Pistol features a 10” button rifled barrel, chambered in 5.56mm NATO, with a twist rate of 1 in 7”. The flash suppressor uses a standard .5 x 28 TPI thread pattern, ensuring compatibility with after-market accessories.

The Sig Sauer P556® SWAT pistol features a 10” button rifled barrel, chambered in 5.56mm NATO, with a twist rate of 1 in 7”. The flash suppressor uses a standard .5 x 28 TPI thread pattern, ensuring compatibility with after-market accessories.

May 30, 2014 · The Sig Sauer P556's compact size and heavy-hitting round are better than pistol caliber carbines for CQB, fast offense, effective defense, ideal for LEOs.

Nov 1, 2009 · SIG SAUER equips the P556 Pistol with a two-stage trigger, which greatly aids accuracy once accustomed to using. All loads produced more than enough accuracy for a CQB type weapon. The 556 SBR is a legitimate 250-300 yard rifle based on these accuracy levels and ballistics offered by the loads tested even with a 10 inch barrel.

Aug 12, 2009 · Get the defensive power of a combat rifle shrunk down to pistol size with the Sig Sauer P556 5.56mm!

Sep 6, 2020 · Sig Sauer is known for building hard-core firearms. But this cool new Sig Sauer P556 pistol really stands out! Read our full review to see why.

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