UPDATE: Sig P320 1000 Round Test - Missed Damage
This guide details how to inspect a Sig P320 for heat-related cosmetic damage to its polymer frame, as demonstrated by Military Arms Channel. It covers identifying melting near the chamber area, which can occur at barrel temperatures exceeding 300°F. The guide emphasizes the P320's modularity, showing how to easily swap the serialized Fire Control Unit (FCU) into a new grip module for a cost-effective repair, highlighting the firearm's resilience and ease of maintenance for intensive use.













