The Apex Trigger Connector for Slim Frame Glock pistols produces a 4.5lb trigger pull when installed with a factory trigger bar or Apex Trigger Bar for the Slim Frame Glock pistol.Features :Direct drop-in replacement for the factory Glock Slim Frame ConnectorSmooth trigger pull due to low friction Nickel-Teflon coatingAids in producing a positive reset100% manufactured in the USAFor Glock Slime Line Pistols (43/43X/48)Does Not Fit Glock 42