This is a Patriot Ordnance Factory Buffer Tube known as the Enhanced Anti-tilt, model 342.
Their Mil-Spec 7075-T6 aircraft aluminum Anti-Tilt Buffer Tube uses "carrier cradle" extensions to ensure that the carrier is always supported by the buffer tube" even when the bolt is forward. This prevents carrier-tilt and premature wear on the buffer tube. Thusly" the buffer-detent button doubles as a lock that stops the buffer tube from rotating and becoming loose under extreme operation conditions. POF-USA's designing also features three (3) extra drain holes for marine environments.
Features:
AR-15 Six Position Buffer Tube
Anti-Tilt
