If you’re one of those hard-to-satisfy folks whose mood, likes and dislikes change on a dime, you just might fall in love with the Sig Sauer P320. Like Texas weather, the striker-fired P320 can morph in a moment’s notice from full-size, carry, compact and subcompact to suit any need. Modular functionality even allows shooters to choose small, medium or large grips by simply changing the modular backstrap.
While size and grip adjustments might be a home run for most companies, Sig Sauer dove deeper to deliver the type of customizable performance that leaves other gun manufacturers scratching their heads. The result? A tool-less 3-point takedown system designed to separate the serialized stainless steel frame and polymer lower from the steel slide and barrel. This adjustability allows the use of an optional Caliber X-Change Kit that makes converting your P320 between 9mm, .357 Sig and .40 S&W quick and easy.
The Sig Sauer P320’s rail even accommodates Sig Sauer red dot optics, such as the Romeo 1, along with fixed sights to allow precise co-witnessing between the two sight systems. The P320 delivers big on eye-catching innovation, exceptional quality, and the reliability you expect from Sig Sauer.
Source: http://www.shootingsportsretailer.com/2016/01/21/now-sig-has-lots-of-caliber-options-for-the-p320/