Baxter6551
Single-Sixer
You need a cup pin punch to take out the firing pin retaining pin and you should research the process. Wise to have a spare pin on hand. Spare parts for 239 are no longer available from Sig. These folks seem to stock the most.
www.topgunsupply.com
Sig Sauer P239 Gun Parts - Top Gun Supply
Sig Sauer P239 gun parts at www.TopGunSupply.com. Shop our real time inventory for Sig P239 parts and accessories.