• XCHANGE Buttstock Module: Picatinny/1913/STANAG Rail mount interface, foldable with 6 position adjustable length of pull for 2.5” travel, ambidextrous LOP button and QD sling cups, 1” webbing sling slot mount, comfort-shoot rubber buttpad, and completed with a 2 position, height-adjustable cheek rest.
• Reversible Folding Stock Mount: Choose your preferred side for folding the XCHANGE Buttstock Module.
• XCHANGE Fire Control Housing Module: ergonomically designed UXR pistol grip also compatible with other AR15 style grips, ambidextrous QD sling cups, and oversized trigger guard.
• XCHANGE Fire Control Module: Housing compatible with most AR15 triggers.
• XCHANGE Magazine Well Module: Easily exchange modules for 5.56 NATO or 7.62 NATO magazines, complete with ambidextrous magazine release button and bolt stop/release
• 7075 Aluminum Receiver: Serialized upper receiver; universally compatible with multiple caliber configurations.
• XCHANGE Titanium Trunnion: Return-to-zero-barrel clamp for precision modularity.
• STANAG Top Rail: 18” usable length for optics and accessory mounts.
• XCHANGE Handguard: Tooless and replaceable MLOK handguard for length customization.
• Ambidextrous Folding Charging Handle: Snag-free and configurable for left or right handed users.
• XCHANGE Barrel Exchange System: Swap calibers and barrel lengths rapidly with standard tooling, while maintaining repeatability and accuracy.
• Ambidextrous Rocker Valve/Modified Long-Stroke Gas System: Select 3 gas settings effortlessly.
• XCHANGE Evacuation Chamber: Supports suppressed and high rate of fire by removing noxious gasses from the operator’s face and keeping the operating system cleaner.
• Taper Muzzle Shoulder Lock: Perfect alignment and accessory lock for muzzle devices.
• Universal Recoil Spring: Adaptable to various calibers and configurations.
• Universal Bolt Carrier Group: Quick exchange bolt head assemblies for easy caliber conversions

14.5 inch models feature a pinned and welded muzzle device to bring the barrel overall length over 16 inches.