Just like the standard barrels, only modified for use with the Gyford LED Standoff system.  For best results, attach with the HD-CBS1 and HD-FDA1 combination, or purchase the HD-CBSKIT to install a set of 4.

Choose your LED color, add the power supply, and finish off the installation with the SO-CAP9 standard cap.

Barrels come in lengths of 1/2", 1" or 1 1/2" and are available in clear anodized aluminum only.