ECM R11 & Norsso 3.7” XL
This video provides a detailed, step-by-step guide to assembling a custom SIG Sauer P365 pistol. It covers the installation of the Fire Control Unit (FCU) into an XMACRO grip module, the assembly of a Norsso R11 slide with a Norsso barrel, and the mounting of a Holosun 407K X2 optic and Surefire XC3-A weapon light. The guide emphasizes proper torque specifications and visual checks for accessory security, demonstrating an intermediate level of firearm assembly skill.









