Polymer frame mounts are becoming the standard on today’s handguns. Although the German HK VP70 9mm pistol debuted in the 1970s, it was the Glock pistol that really made the polymer frame popular. The gun was introduced to the U.S. market in 1985, and its reputation rose rapidly, thus occupying the U.S. military and police pistol market. For example, the Glock 17 occupies 40% of the U.S. police automatic pistol market. Polymer materials have the advantages of low cost, small mass, corrosion resistance, and suitable for use at different ambient temperatures (the thermal conductivity is much lower than that of metal, and they are not sticky at low temperatures). The success of Glock proves the effectiveness and high practicality of polymers as new materials for pistols. Of course, its success is also related to the low cost due to fewer parts and simple structure, as well as the easy-to-operate and reliable trigger safety device to ensure the safety of the gun. Glock's trigger safety device has many advantages: it is easy to use, and it is automatically in the safe state when your finger leaves the trigger, eliminating the need for a manual safety outside the gun; the trigger force is uniform for each shot; the trigger movement is small, and the continuous shooting performance is excellent.

The success of Glock has caused other companies to have a strong sense of crisis. They feel that the automatic pistols they produce will fall behind the times if they do not use polymer slides. As a result, in the mid to late 1990s, many companies introduced polymer frame pistols. In order to occupy the pistol market, Sig introduced the Sig Pro (SP) series of pistols equipped with polymer slides. The company first launched the 0.40-inch (10.16mm) S&W caliber SP2340 pistol in 1999, and then launched the 9×19mm caliber SP2009 pistol. The 0.40-inch S&W caliber was first recommended. This is because at that time, police and self-defense pistols were mostly equipped with 0.40-inch S&W bullets. When the magazine capacity was strictly limited, the use of this bullet could enhance the stopping effect, and Glock pistols and other pistols were also used. Equipped with this bomb.

The SIG pistol did not adopt the simple approach of "using polymer materials in existing series of pistols to reduce costs", but redesigned the SP series pistols with polymer slide seats as standard accessories and will sell them The products are clearly divided into the classic series (metal frame pistols starting from the P220 series) and the new SP series. The product promotion does not claim that "the SP series is better than the P220 series", but treats the SP series as a new product with different characteristics compared to the past metal frame pistols, and implements the policy of selling the two series of products in parallel, thereby avoiding The sales of SP series pistols have made consumers uneasy about metal frame pistols.

So, what are the characteristics of the SP series compared with the P220 series? Its characteristic is that the retail price is 100-200 US dollars cheaper due to the use of polymer materials. The SP2340 can be said to be a variant of the small series of Sig Sauer P229 pistols. Its retail price is the same as the SP2009 at US$400, which is lower than the price of the P229 (US$600) and lower than the Glock 37 (priced at US$562). The Ruger P345 ($548) is both affordable. Therefore, the SP series pistols are quite attractive in the market price war. In addition to the price advantage, the SP series pistols adopt a modular structure, which is convenient for production, assembly and maintenance. Their small size, light weight and easy operation are also favorable factors for their entry into the market. In 2000, not long after the SP series pistols were launched, the Swiss SIG company transferred its small arms division to the German company Sauer. After negotiation, Sauer obtained the right to use the "SIG" trademark. In order to participate in the French government law enforcement agency's pistol selection test in 2002, Sauer's former SIG small arms division improved the SP2009 pistol and named it the SP2022 pistol in accordance with the French government's bidding requirements for a pistol with a service life of at least 20 years. Companies participating in the campaign include Sauer, Beretta, HK, FN, Glock, CZ, Ruger, Walter, Smith & Wesson and other companies. In the end, only the SIG-Sauer SP2022 and the HK P2000 were left to compete. Although the performance of the two guns was similar, the price of the SP2022 was lower at 280 euros. The French government finally ordered more than 270,000 SP2022 units, requiring delivery from the second half of 2007 to early 2008.

In the United States, the current sales situation of SIG-Sauer pistols is unprecedentedly good. It has been receiving orders from the U.S. government one after another. In 2005, it received a large order from the Department of National Security (Home Land Security), totaling US$23.7 million. , including an order of US$4.2 million from the US Coast Guard. This has changed the long-term situation in which Glock pistols have had an absolute advantage in the law enforcement agency market.

In January 2005, Sauer officially announced that "the U.S. Army Tank/Motor Vehicles and Ordnance Command (located in Rock Island, United States) decided to adopt the SP2022 pistol manufacturing system." information. As a result, the SP2022 became the standard pistol of the US military after the SIG-Sauer P228 (US Army standard name M11). Although the order quantity is only 5,000, for Sauer, the most important thing is not the current order quantity, but getting an order from the US government, so that it can take the opportunity to become famous and continue to launch the commercial model of SP2022 to compete with Glock pistols. , to compete for the U.S. civilian handgun market. The SP2022 pistol tested this time was provided by the Small Arms Division of SIG. The shooting test was conducted at the PMC shooting range outside Las Vegas in the United States, using the iron plate target at the shooting range. The 9×19mm bullets used in the shooting test and their test data are shown in Table 1.

The sleeve moves briskly and smoothly when the SP2022 is launched. The recoil of SP2022 when firing 9×19mm bullets is smaller than that of SP2340 when firing 0.40-inch S&W bullets, so it is certainly easier to control. Due to the well-designed grip, it feels very comfortable to shoot through 15 rounds in the magazine in one go. The SIG-Sauer SP2022 pistol is the latest model of the former SIG SP series pistol. In the military and police pistol market competition, it not only has the advantage of low price, but also has the advantages of compact structure, safe use and easy operation. Therefore, the gun is favored by military and police departments.

Since the stopping effect of the 9×19mm bullet is slightly poor, the company increased the magazine capacity to ensure sufficient firepower. Today's automatic pistols equipped with such large-capacity magazines are still practical, and the small portability of SP series pistols is also attractive. However, in the civilian pistol market (body protection, home defense, etc.), this does not comply with relevant regulations. In the United States, it is currently stipulated that civilian pistols can hold no more than 10 rounds of ammunition, but the SP2022 has a capacity of 15 rounds, so it cannot enter the U.S. civilian pistol market. However, the company will not give up easily, and may soon enter the US civilian pistol market with a commercially available variant of the SP2022 that complies with relevant regulations.