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The SIGM400 is a family of firearms manufactured by SIG Sauer. The M400 is an air-cooled, direct impingement gas-operated, magazine-fed carbine that is based on the earlier AR-15 rifle. Depending on the variant, it can be chambered for 5.56×45mm NATO or .300 AAC Blackout cartridges, and may have a fixed or telescoping stock.
Design details
Operating mechanism
The SIGM400 is a semi-automatic firearm in eitherrifle
A rifle is a long gun, long-barreled firearm designed for accurate shooting and higher stopping power, with a gun barrel, barrel that has a helical or spiralling pattern of grooves (rifling) cut into the bore wall. In keeping with their focus o ...
as the SIGM400 Classic, SRP, Tread, Elite, Predator or pistol
A pistol is a type of handgun, characterised by a gun barrel, barrel with an integral chamber (firearms), chamber. The word "pistol" derives from the Middle French ''pistolet'' (), meaning a small gun or knife, and first appeared in the Englis ...
as the Elite PSB, intended for law enforcement, military and civilian markets. It fires from a closed bolt and uses a direct impingement gas system.
Features
The SIGM400 Predator is a rifle while the SIGPM400 Elite PSB is a pistol. The rifles are chambered for either 5.56×45mm NATO with , , , or barrels threaded 1/2x28, or chambered for .300 AAC Blackout with or barrels which are threaded 5/8x24 for muzzle devices such assound suppressor
A silencer, also known as a sound suppressor, suppressor, or sound moderator, is a gun barrel#Muzzle, muzzle device that suppresses the muzzle blast, blast created when a gun (firearm or airgun) is discharged, thereby reducing the sound inten ...
s. There are California compliant (" featureless") models for both. The .300 AAC Blackout model is tailored specifically for efficient use with suppressors. The Picatinny rail
The 1913 rail (MIL-STD-1913 rail) is an American rail integration system designed by Richard Swan that provides a mounting platform for firearm accessories. It forms part of the NATO standard STANAG 2324 rail. It was originally used for mount ...
supports optical, electro optical, or iron sights. SIG Sauer also manufactures suitable suppressors.
The SIGPM400 Elite PSB pistol is chambered for 5.56×45mm NATO with an barrel and is chambered for .300 AAC Blackout with a barrel. Both use a Pistol Stabilizing Brace accessory.
Users
* Civil Police of Rio de Janeiro State * : Egyptian Special Forces Sa'ka, Navy Sa'ka And paratroopers * : Iraqi Special Operations Forces use the SIG Sauer M400. * : Oman Military use the SIG Sauer M400. * : Philippine Army used as a Designated Marksman Rifle. * : US Military,Philadelphia Police Department
The Philadelphia Police Department (PPD, Philly PD, or Philly Police) is the police agency responsible for law enforcement and investigations within the County and City of Philadelphia. The PPD is one of the oldest municipal police agencies, f ...
, Detroit Police Department SWAT, Franklin County, Ohio Police Department, California Highway Patrol, Indiana State Police, Vermont State Police, Virginia State Police use the SIG Sauer M400.
See also
* Heckler & Koch HK416 * SIG Sauer SIG516 * SIG MCX * M4 carbineReferences
{{SIG Sauer Rifles .300 BLK firearms 5.56×45mm NATO semi-automatic rifles Assault rifles of Germany Assault rifles of the United States Semi-automatic rifles of the United States SIG Sauer rifles AR-15 style rifles Weapons and ammunition introduced in 2010