DISSENT uppers will work with most BANSHEE, RESOLUTE, and ENDEAVOR lower groups with some modification. Since the DISSENT upper receiver is taller than a standard AR15 or AR10 upper group, the existing buffer tube and stock or brace must be removed from your existing BANSHEE, RESOLUTE, or ENDEAVOR lower. The lower receiver adapter plate that comes with a DISSENT upper MUST be installed to contain the DISSENT's recoil springs within the gun.
For full instructions on how to use a DISSENT upper with a standard AR lower, please see How to Install a DISSENT Upper and End Plate in the DISSENT Owners Manual.