Agency Arms 419 Compensator. 819" +/- 0.005" for optimal fitment). It is available in a two chamber design (2 vertical ports) or a single chamber design (1 vertical port). This compensator is specifically designed to fit Agency Arms or Syndicate slides for the P320. (NOT COMPATIBLE WITH CONVERSION BARRELS) Specifications for Agency Arms 419 Compensator: Manufacturer: Agency Arms Color: Black Finish: Black Gun Make: SIG Sauer Gun Model: SIG Sauer P320 Included Accessories: 2 Set Screws Allen Wrench Vial of Rocksett Compensator Features of Agency Arms 419 Compensator: Single Port 417 Compensator for Sig Sauer P320 Pistols Package Contents: Agency Arms 419 Compensator What firearm models does the manufacturer say Agency Arms 419 Compensator is compatible with? The manufacturer says that Agency Arms 419 Compensator is compatible with SIG Sauer P320