I am new to the AR scene and to Spikes Tactical. I was looking to buy a kit and I am wondering what is the main difference between the standard lowers and the enhanced lower kits. Any feed back would be great.

Some parts are upgraded, and others are given premium coatings to make them more reliable under prolonged fire and easier to clean.

Pistol grip is upgraded to Ergo grip
Safety selector is upgraded to Ambi selector
Fire Control Group is Nickel Boron coated
Trigger guard is upgraded to a winter style billet model
Trigger/hammer pins are upgraded to KNS anti-rotation pins