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SIG 556 SWAT Like
the SIG
556,
the SIG
556 SWAT features the same
high-performance two position adjustable gas piston operating rod system
engineered by SIG’s sister company Swiss Arms and marries it to a trigger
housing that not only cuts the rifle’s weight by a pound but is designed to
accept standard AR magazines.
The SIG 556 SWAT features a 16” military grade cold hammer forged barrel,
chambered in 5.56mm NATO, with a twist rate of 1 in 7”. The
high performance flash suppressor provides enhanced flash reduction and
features an ACME type thread for compatibility with select industry sound
suppression devices. The flash suppressor retains a standard .5 x 28 TPI
thread pattern, ensuring compatibility with after-market accessories. The
vented tactical quad rail forearm is machined from aircraft grade aluminum
alloy and hard coat anodized for durability. The quad rail features four
integrated Picatinny rails for mounting a wide range of accessories. The Picatinny
rail equipped receiver is made of high strength carbon steel with a
durable wear-resistant Nitron® finish. The rifle comes standard with the flip
up combat front and rear sight system. The trigger housing is machined from
an aircraft grade aluminum alloy forging with a hard-coat anodized finish
designed to survive extreme conditions. The rifle comes equipped with a
smooth two-stage trigger, ambidextrous safety and is designed to accept standard
AR magazines. A 30-round magazine is supplied with each rifle. The
rifle features the MAGPUL CTR Carbine Buttstock. This buttstock
is adjustable for length of pull and features a unique locking mechanism that
friction locks the stock to the receiver extension for zero movement. The
ergonomically designed pistol grip features an integrated storage
compartment. The rifle also includes the Grip-Light vertical forend grip,
which features a removable tactical LED flashlight and mounts
directly to the quad rail forends. Select versions feature a folding
stock with the ability to collapse, providing he best of both
worlds.
SIG 556 Rifle Wins NRA Tactical Gun of the
Year
Few semi-automatic rifles have captured the imagination of the shooting
public like the SG 550 series.
For years this legendary Swiss-made rifle
has been restricted to law enforcement and military sales, where it has
acquired a reputation for reliability, durability and accuracy. Now, SIG
Sauer
has developed a U.S. made version called the SIG 556 ... .” So stated Shooting Editor
Glenn Gilbert in “Like a Swiss Watch” (December 2007, p. 46). Both 556 SWAT and full-length versions
feature the quality shooters have come to expect from SIG, including steel
Picatinny rails fixed to the tops of their receivers and military-grade cold-hammer-forged
barrels. But these are fully updated designs. Significant changes
have been made to the lower receiver and the stock. The cast aluminum lower
receiver retains the ambidextrous safety lever of the original 550, but the
magazine well has been modified to take commercial and surplus AR-15/M16-style
magazines. Further, given the crisp break and limited overtravel of
its trigger, the SIG 556’s accuracy was commendable. “The bottom line, simply
stated,” wrote Gilbert, “is that the SIG 556 is an exceptionally
accurate and reliable semi-automatic rifle whose
performance is more than enough to justify its existence.” That shared
sentiment among staffers resulted in the SIG Sauer 556 being named the first-ever
American Rifleman Tactical Gun of the Year.
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