SIG Sauer P227

The SIG Sauer P227 is an American-designed and produced semi-automatic pistol which was introduced in 2013 and discontinued in 2019. The P227 introduced a double-stack .45 ACP caliber handgun into the SIG Sauer lineup. It was introduced along with the P224.
Design.
The P227 is similar in many ways to the P220 in .45 ACP that SIG Sauer introduced in 1975. It uses the same SIG Sauer designed short recoil locking system with their Single/Double Action trigger. The P220 is a full sized large pistol. The P227 uses a double row magazine for increased ammunition capacity and is very slightly larger to the point that it is not very noticeable. The action is automatically propped open after the firing of the last round in the magazine. The hammer, can be safely lowered by the decocking lever. Takedown is accomplished by removing the magazine, locking the slide open, and then turning down the takedown lever. The slide, barrel, and recoil spring will then slide forward off of the frame.
The P227 also features the new Enhanced Ergonomics 'E2' wraparound grip, rather than the two-piece grips of the P220. The P227 has a magazine capacity of ten rounds and one in the chamber, unlike the seven- or eight-round capacity of the P220. SIG also offers a fourteen-round capacity magazine, which is included in various models. The P227 is a double-action/single-action-operated handgun, meaning that the first trigger pull is a ten-lbs double-action pull, but all the follow-up shots are a 4.4-lbs single-action pull. The full size model is 7.7 inches in length (with a 4.4 inch barrel) and 5.5 inches in height with 1.5 inches in width. It weighs 32 ounces (907 g) with the magazine, features an accessory rail and three-dot contrast sights or SIGLITE night sights. The frame is constructed from anodized aluminum alloy with a Nitron finish and a milled stainless steel slide.
Model descriptions.
As of February 2017, the P227 is offered in eight models from the SIG Sauer Web Site:
Adoption.
In 2013, the Indiana State Police adopted the SIG Sauer P227 Full Size Nitron. The contract calls for over 5000 P227 deliveries by the end of 2014.
After extensive .45 ACP weapon testing involving several manufacturers, the Pennsylvania State Police selected the P227 as its department-issued sidearm in 2014.
The Connecticut State Police currently issue the P227 as it’s standard duty pistol.
The Delaware State Police currently issue the P227 as it's standard duty pistol.