AO uses the most overpowered firing pin spring I have ever seen. Mine was somewhere in the range of 50lb. Every other 1911 seemed to be in the 2-3lb range. I would recommend replacing that spring if you plan to keep the safety installed. I believe its supposed to be a drop safety, but it makes cleaning the channel a nightmare. My strongest advise to you and any other AO owner is to replace the ejector as soon as possible. Its a cast part, and not strong enough for the job. A forged ejector costs about $20, and takes minimal skill, and about 1/2 hour to install. Fixing after it broke cost me $120 to have the stud drilled out. Love the pistol though.