For the past few years I’ve been personally hunting for an affordable yet reliable side charging upper for my AR platform rifles. I’ve finally narrowed it down to the Hard Charger by Devil Dog Concepts! https://americanresistancegear.com/?p=2213
At under $150.00 this is it. Normally, dedicated side charging uppers cost around $400-$500 after BCG and charging handle. This adaption uses your current mil spec upper receiver. I’ve personally tested and beat this thing and it passes the test. It was developed and designed by U.S. Marines with their combat expectations. Highly recommended to anyone wanting the side-charging option on their weapon.