The TAC DRIVER is specifically designed for ELR cartridges based on the .505 Gibbs bolt face (.640 rim diameter) or the 416 Rigby bolt face (.585 rim diameter), and other cartridges popular in The King of 2 Mile competitions.

It is available in both 1.45 and 1.60 diameters, either repeater or single shot.

TAC DRIVER repeater actions have no feed lips and use only center feed box magazines.

The TAC DRIVER actions use a straight bolt handle with threaded bolt knob.