DI vs Short Stroke Gas Piston - Thermal Analysis
This video provides a technical comparison of Direct Impingement (DI) and Short Stroke Gas Piston operating systems, utilizing thermal imaging to illustrate heat distribution during firing. Expert analysis highlights how DI systems, like the Brownells BRN-10, transfer more heat to the action and BCG, while piston systems, exemplified by the FN SCAR-17, localize heat at the front gas block, keeping the action cleaner and cooler.












