The SIGM400 is a family of firearms manufactured by SIG Sauer.[1] The M400 is an air-cooled, direct impingement gas-operated, magazine-fed carbine that is based on the earlier AR-15 rifle.[2] 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.[3]
| SIG Sauer SIGM400 series | |
|---|---|
 Sig Sauer M400 series rifle | |
| Type | Semi-automatic rifle Carbine |
| Place of origin | United States |
| Service history | |
| Used by | See Users |
| Wars | War in Iraq (2013–2017) Islamic State insurgency in Iraq (2017–present) |
| Production history | |
| Designed | 2000s |
| Manufacturer | SIG Sauer |
| Produced | 2010–Present |
| Specifications | |
| Mass | 7.6 pounds (3.4 kg) |
| Barrel length | 14.5–20 inches (37–51 cm) (5.56×45mm) 9–16 inches (23–41 cm) (.300 AAC) |
| Cartridge | 5.56×45mm NATO .223 Remington .300 AAC Blackout |
| Action | Direct gas impingement system, rotating bolt |
| Feed system | STANAG magazines |
Design details
editOperating mechanism
editThe SIGM400 is a semi-automatic firearm in either rifle as the SIGM400 Classic, SRP, Tread, Elite, Predator or pistol 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.[3]
Features
editThe SIGM400 Predator is a rifle while the SIGPM400 Elite PSB is a pistol. The rifles are chambered for either 5.56×45mm NATO with 14.5-inch (37 cm), 16-inch (41 cm), 18-inch (46 cm), or 20-inch (51 cm) barrels threaded 1/2x28, or chambered for .300 AAC Blackout with 9-inch (23 cm) or 16-inch (41 cm) barrels which are threaded 5/8x24 for muzzle devices such as sound suppressors. There are California compliant ("featureless") models for both.[3] The .300 AAC Blackout model is tailored specifically for efficient use with suppressors. The Picatinny rail 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 11.5-inch (29 cm) barrel and is chambered for .300 AAC Blackout with a 9-inch (23 cm) barrel. Both use a Pistol Stabilizing Brace accessory.[3]
Users
edit
Brazil Civil Police of Rio de Janeiro State[4]
Egypt: Egyptian Special Forces Sa'ka, Navy Sa'ka And paratroopers
Iraq: Iraqi Special Operations Forces use the SIG Sauer M400.[5]
Oman: Oman Military use the SIG Sauer M400.[6]
Philippines: Philippine Army used as a Designated Marksman Rifle.[7][8]
United States: US Military, Philadelphia Police Department, 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.[9][10]
See also
editReferences
edit- ^ "SIGM400". SIG Sauer.
- ^ "SIG SAUER's M400 Predator". gunsmagazine.com. Retrieved 27 February 2017.
- ^ a b c d "SIGM400 Predator". sigsauer.com. Archived from the original on 28 February 2017. Retrieved 27 February 2017.
- ^ "Conheça os novos fuzis da Polícia Civil do Rio". O Globo. 8 July 2023. Archived from the original on 12 July 2023.
- ^ "ISOF Arms & Equipment Part 1 – Personal Equipment". Armament Research Services (ARES). 27 November 2016.
- ^ "Is This the Ultimate AR-15 Rifle of All Time?". 20 July 2019.
- ^ "ORD PABAC2-005-24 Carbine, 5.56mm Assault Rifle 15 Platform Acquisition Project of the Philippine Army".
- ^ https://armyrecognition.com/defense_news_december_2023_global_security_army_industry/philippines_army_to_enhance_accuracy_with_new_7.62mm_marksman_rifles.html [bare URL]
- ^ "Philadelphia SWAT Adopts SIG SAUER M400 Pro Rifles -". 3 January 2019.
- ^ "Detroit SWAT picks Sig Sauer M400 in rifle contract".