[1][2][3] McMillan produces several .50 caliber rifles, based on the same proprietary action, for military, law enforcement and civilian use.

Rifles of the TAC-50 family are guaranteed to provide 0.5 minute of angle (MOA) groups with match-grade ammunition under ideal conditions.

The large bolt has dual front locking lugs, and its body has spiral flutes to reduce weight.

The stock incorporates a smaller pistol grip to fit a wider range of hand shapes, with and without gloves.

The magazine release lever was repositioned ahead of the trigger bow to make the system easier to operate with gloved hands.

For the A1 variant a new lighter bipod with legs that adjust vertically, as well as forward and rearward, to fine-tune the rifle for elevation was also developed.