Muzzle device glitch

When you remove the muzzle device from a gun and join a match it removes the last attachment put on the gun to put back on the flash hider. This affects the ability to try and make certain builds like one I was tryin to make for m417 to try and use it in single fire like a dmr. In order to put the match grade trigger in it I had to remove the muzzle device but everytime I join a match I have to re-edit my gun to set it up. Ps if anyone wants the build lmk it works really good at range and allows you to go full auto up close.