Another vote for Apex. Most shops will do the install. Sometimes you can get it put in right after you buy the gun. It adds more value to the gun and is reversable. Since the sear is designed for it instread of hacked up it'll be stronger and more reliable. You can do the install yourself, but gunsmiths don't charge alot for such an easy job so it's not much more to have it done. It's the law in mass that the trigger pull has to be 10lbs. In other states it's more like 6lbs. If trigger weight is your only concern $20 in springs will fix that. No need to remove the rear sight to toss in a lighter return spring and sear spring. The skills required are being able to hit things with a hammer. If you have trouble hanging picture frames it's best left to a professional.