Videos tagged with Firearm Component Quality

This guide details how to inspect the bore of a bolt carrier group (BCG) for surface roughness using a borescope. Significant roughness in the gas ring area can lead to premature wear or failure of the gas rings. The video emphasizes that even high-quality BCGs, like those from BCM, can occasionally have manufacturing defects. It suggests using budget-friendly borescopes for home inspection and performing gas ring tension tests as a complementary diagnostic.