The SIG SAUER Take Down Pins is a lower part from Sig Sauer. One store lists it, OpticsPlanet at $35.99.
Specifications
Manufacturer
Sig Sauer
Material
Steel
From the manufacturer
SIG SAUER Take Down Pins. Using a cheap substitute pin can leave you with a hefty dent in your morale and you want one that's built to last. However you can avoid most of the damage that can be caused by a cheap part by replacing your used takedown and pivot pins with a Sig Sauer original part by using this Sig Sauer original Takedown Pin Replacement. These are machined from steel for maximum durability and low-friction in the field. Use the Sig Sauer Original Takedown Pin Replacement to keep your receiver's integrity. Specifications for SIG SAUER Take Down Pin: Manufacturer: SIG SAUER Color: Black Fabric/Material: Steel Caliber: 5.56x45mm NATO .300 AAC Blackout .223 Remington Package Contents: SIG SAUER Take Down Pin SIG SAUER Infinite Guarantee SIG SAUER 1800061-R: Take Down Pins