ProMag's Ruger P91 .40S&W 50rnd Polymer Drum housing is constructed of a proprietary lightweight DuPont Zytel based polymer. The magazine spring is made from heat treated stainless steel. Made in USA.
Capacity: 50 rounds
IMPORTANT SHIPPING INFORMATION: We cannot ship magazines that hold more than 10 rounds to CA, DC, HI, Cook County IL, IL (rifle), MD, MA, NJ, NY, RI, VT or WA (regardless of if you are a Law Enforcement Officer or not). We cannot ship magazines that hold more than 15 rounds to CO and IL (pistol) or 17 rounds to DE and are unable to ship any magazines regardless of size to CT. We cannot accommodate any requests to disassemble, modify or change items before shipping to make them legal in a certain state.