i recently has the msh and mainspring replaced due to some light primer no fire problem i had with my SA lightweight operator. i picked up my weapon and relized that the grip safety does not function. (trigger will fire with no grip on the grip safety.) is there a video or some advice on how to fix this. i would like to not go back to the gunsmith that just worked on it since that would involve more down time. i believe that it is related to the sear spring but i am unsure. i regret sending my operator to a gunsmith for a simple mainspring and msh swap as i have seen dozens of videos on how to do it. any help will be appreciated. thanks. Wanna kill these ads? We can help!