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1.
SIG Sauer pistols are undoubtedly the finest TDA .45s and 9mms in the world.
The Beretta is a POS compared to a SIG.
by Valkyre April 21, 2004
 
2.
Manufacturer of high-quality firearms for military, law enforcement and commercial users. Best known for their "P" series of semi-automatic pistols (such as the P220, P226, P229, etc.), they also offer high-quality rifles.

Originally founded in 1853 as a wagon factory in Switzerland, by 1865 they were supplying rifles to the Swiss Army and the company's name was changed to Schweizerische Industrie-Gesellschaft (SIG). In the 1970's SIG formed a partnership with J.P. Sauer & Sohn, GmbH of W. Germany, hence the SIG Sauer name. SIG SAUER has its U.S. headquarters in Exeter, New Hampshire, with over 280 employees.

Source: SIG SAUER website
SIG SAUER was awarded a contract with the NCIS (Naval Criminal Investigative Service) for over 2,000 P229 and P239 pistols.
by Bamboozled!!! May 28, 2008
 
3.
A pistol made by Sig, some models are P-232, P-228, and P-229.
I like sigs.
by Thomas Splasky August 29, 2003
 
4.
Arguably the most popular and coveted handgun in the world. Used by countless Law Enforcement and Military Special Operations units in the world (including the British SAS and US Navy SEALs (P226) and US Secret Service Presidential Detail P228, P229)).

Slide not likely to rupture and break operator's jaw (like Beretta model 92s) or suffer severe Case Neck Blowouts (like so many cheap Glocks do).

Popular for their "To hell and Back" reliability.
Daym, the news said that NCIS Special Agent perforated dat terrist' ass with dat Sig Sauer!
by whoaps July 10, 2008
 
5.
A very accurate, well made, over hyped and overpriced brand of handgun. Comes in almost every pistol caliber imaginable. Do yourself a favor and get the cheaper, more durable and just as accurate Glock.
You spent how much on a Sig Sauer? Shit, for that amount of money you could've bought two Glocks!
by BillyBobGunNut September 17, 2007