Just in case you had questions about your M9
SSG Michael Howard of the Army Marksmanship Unit demonstrates the proper technique for the disassembly and maintenance of the M9 (Beretta 92F) weapon system, which is based on the classic old Walther P-38 and is very similar to most other DA/SA semi-autos such as the Sig Sauer P-series and others.
Of course this is all basic stuff, but it’s still a helpful vid without an agenda.