ProMag Sig Sauer P226 Magazine 40 S&W / .357 Sig Blued Steel 20/rd

An extended 20-rd magazine for the Sig Sauer P226 pistol in either .40S&W or .357Sig. Constructed from heat-treated blued-steel with a follower lock-plate and base-plate molded from a proprietary DuPont Zytel based black polymer; and using a spring wound from Chrome-silicon wire and heat-treated for strength and reliability.