BSMU-P-A324-ARM-15S is Blue Sky Mast’s straight-arm mounting bracket designed to accept a 1.5-inch by 24-inch side arm for portable mast deployments. This 15S variant is listed within Blue Sky Mast’s AL1/AL2 accessory ecosystem as a Straight Arm Kit component and is associated with NSN 5340-01-676-7614, identifying it specifically as a bracket mounting element for a side-arm assembly. The bracket mounts a single straight side arm to a universal mast mount, enabling horizontal extension for antennas or sensors on field-ready mast systems and is part of the Blue Sky Mast line of rugged, outdoor-capable portable military mast configurations.
