If you have a Cairns 1044 with a full face shield and/or 1/2" mounting bolt spacing, as shown here, you will need to order a package F. This is actually a bracket designed for a modern helmet but when turned to the inside (so the decal is facing toward the inside of the helmet) it allows for clearance of the light from the face shield.
NOTE: The light shown in these photos is the Smith & Wesson Delta Force Tactical. The Bracket is the same.

Labels: Cairns 1044