Mostly junk - KAK AR-15 Lower Parts Kit

Very disappointed in the quality of this kit. The pivot pin was unusable, it was either oversized or not round. It was nearly impossible to install and took a punch to back out. I replaced with a spare Palmetto State pivot pin that fit perfectly. The springs seem to also be poor quality compared to other parts kits that I've used. I did not use the fire control group so I can't comment. I would pass on this if you are looking for a quality kit that goes together easily.