so im not completely new to 1911’s as I have a Kimber Ultra Carry II for my every day carry. Now I purchased this ATI Titan to be sort of a project gun for learning on and not having to rely on for self defense. So far I’ve replaced the recoil spring with a Kimber version as ATI is known for cheap spring assembly that breaks often. Other upgrades as follows: Fusion Firearms high force stainless hammer EGW trigger Wilson Combat bullet proof sear Cylinder & slide dissconnector STI stainless firing pin Wolff firing pin spring Extreme Engineering Hammer Strut Wolff sear spring And some thin G10 black grips I did not file or polish anything other than the trigger/trigger bow because these parts were a great step above the factory ones. Pulse I don’t have the sear filing tool so I didn’t want to mess up a new aftermarket part. The trigger pull is extremely crisp and smooth with a very short reset, it I have not put any rounds through it yet. My question is what else could be done to improve the operation? Some polish work on the feed ramp, aftermarket extractor, or anything else I’m not thinking about. Any input would be appreciated. I almost forgot to mention with the upgrades I’m still around the $600 mark on this 1911.