Too replace the front sight with a Fibre Optic unit, is was about 30 seconds. The springs I replaced with lighter, (although not the lightest) hammer and trigger return spring. The strut needs a serious polishing especially where the hammer spring contacts and the hammer rides over it. It is built like a truck! If you run out of ammo, you can smash the targets. I did a slight chamfer job on the cylinders. Like Jason says, needs some dryfiring and proper lubrication. I have been eyeing something else recently, so I have been hesitant about keeping it.