My experience with arm or ally was awesome. Unfortunately I was not happy with the p80 Glock lower. There was not any instructions with it in the packaging. I watched a YouTube video on how to drill it out with the jig. But it unfortunately did not work well all three holes I drilled did not match up. I’m sure it was partly my fault but I guess it can be common without proper instructions. I also bought a Lower completion kit that was top notch it was a arm or ally brand and the price and quality is great. Other than the lower I was super happy with my purchases and would recommend arm or ally to anyone building a firearm on their own.