The Tanfoglio STOCK I Polymer replaces the all-steel STOCK I frame with a reinforced polymer grip module and steel rail inserts. Lighter than the steel STOCK I by approximately 8 oz, this variant appeals to IPSC Production competitors who want the SA trigger and adjustable sights of the STOCK I in a lighter package. The polymer frame uses the same dimensions as the steel version, allowing grip panels and accessories to transfer. Type: Pistol Action: Semi-Automatic Caliber: 9mm Capacity: 17 Year introduced: 2010, Italy Weight: 32.5 oz Overall length: 8.5" Status: Active Intended use: IPSC Production, Competition