How to Perform a 1911 function and safety check. Anytime you disassemble or field strip your 1911 for cleaning purposes, recoil spring replacement, plunger tube replacement, upgrade, etc. it is necessary to perform a function and safety check. This is simply a series of steps to be sure that the gun has been assembled properly and the firearm safeties are working normally.. This tutorial will walk you step-by-step through a thorough mechanical function check. The checks in this tutorial are…