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. The optional flip up front combat sight is adjustable for windage, rear for elevation, and the receiver is made of high strength steel with a durable wear-resistant Nitron® finish.
