LANTAC AR-15 6mm Firing Pin Stainless Steel. This stainless steel firing pin is perfect for a new build or upgrading an old favorite. Specifications for LANTAC AR-15 6mm ARC Firing Pin: Manufacturer: LANTAC Gun Model: AR-15 Color: Silver Gun Make: AR Platform Gun Type: Rifle Package Contents: LANTAC AR-15 6mm ARC Firing Pin What firearm models does the manufacturer say LANTAC AR-15 6mm ARC Firing Pin is compatible with? The manufacturer suggests that LANTAC AR-15 6mm ARC Firing Pin is compatible with AR-15LANTAC 01-UP-6ARC-FPIN: AR-15 6mm Firing Pin Stainless Steel