Sidewing A4 Maximize the carrying capacity of your APTUM MICRO X chest rig with the Sidewing A4 expansion panel. Designed for users who require additional gear storage, the Sidewing A4 converts the compact MICRO X into a larger patrol-style chest rig with expanded attachment space for mission-critical equipment. The A4 configuration features four laser-cut attachment columns, providing increased mounting options for pouches, accessories, and mission-specific loadouts. Its dual-sided design allows users to mount equipment on both sides simultaneously while maintaining a secure and streamlined profile. Built for demanding environments, the Sidewing A4 uses laser-cut GRID construction, MIL-Spec thread and elastic, and Berry Compliant materials. Each Sidewing A4 is proudly made in the USA for reliable tactical performance. Features: Converts APTUM MICRO X into a larger patrol-style chest rig configuration Four laser-cut columns for maximum pouch and accessory attachment capacity Supports simultaneous pouch mounting on both sides Top lock-down flap for added retention and stability Two 1/8" bungee attachment points Four 1" female ITW-compatible buckles Additional laser-cut hole attachment points for customization Increased gear storage for extended missions and patrol applications Materials & Construction: Laser-cut GRID construction MIL-Spec thread, elastic, and Velcro Berry Compliant materials 100% made in the USA Dimensions: Total length: 27.5" (end of female buckle to female buckle) Velcro attachment field: 6" x 10"