Videos tagged with Flex Hone

This video details the process of repairing rough chambers and polishing feed ramps on Ruger AR-556 barrels. Using flex hones and metal polish, the School of the American Rifle successfully removed surface defects from two barrels without oversizing them. Smooth chambers and feed ramps are crucial for reliable extraction and to prevent damage to projectiles during feeding.

This video details a physical inspection of three Brownells M16A1 barrels, with one exhibiting a chamber issue and failing front sight base alignment. The uppers are identified as 1970s Colt. Despite the defect, the decision is made to repair the barrel due to its scarcity. The repairs involved using a Flex Hone for the chamber and re-aligning the front sight base with reamed holes and oversized taper pins. A follow-up video is promised to showcase the repair process.

This guide, presented by Mark Serbu, a professional firearm designer, details how to fix AR-15 short-stroking issues by polishing the chamber. Short-stroking, where the bolt doesn't travel back far enough to chamber a new round, can be identified by dull ejected brass and extractor slippage. The solution involves using a Flex-Hone tool to smooth the chamber, which Mark Serbu demonstrates using high-speed video analysis.