Videos tagged with Misalignment

This video demonstrates how to identify a 'clocked' barrel extension in an AR-15 upper receiver, a common issue arising from over-torqued barrel nuts. The instructor highlights visual cues like misaligned feed ramps and explains potential causes, including bent index pins or manufacturing defects. The guide also suggests a practical test using a handguard to confirm the misalignment.

This video details the inspection of a PSA/H&R XM177 complete upper receiver, identifying two critical issues: a clocked barrel extension preventing proper seating of components and a significantly misaligned front sight base. The instructor demonstrates how to diagnose these problems using alignment gauges and component fitment, noting that headspace passes but the issues require correction. Potential solutions like oversized taper pins and proper jig use are discussed, emphasizing the importance of thorough inspection before building.

This guide details how to diagnose a 'clocked' or misaligned AR-15 barrel extension, a common issue causing accuracy problems. Expert Chad Albrecht from School of the American Rifle demonstrates the use of specialized tools like the Midwest Industries URR and 2Unique LLC rod to identify impact marks and confirm misalignment. The video emphasizes comparing the faulty receiver to a correctly assembled one to understand the severity of the issue and discusses potential causes for the problem.