JT-9 Replacement Parts

Purchased 2 AR-9s to enter into uspsa PCC division. Upon first receiving the rifles build quality was and parts selected in the build were thought out good quality and worked well. Because of covid shipping took longer than i would have liked but custom service was quick and provided updates as requested. Rifles shot well and consistent as long as I used factory ammo and factory glock mags. The rifle did not like reloads or ETS mags neither of which are deal breakers to me. I did run into partial batter/out if batter discharges which caused the mag release bar to bend making the rifle unusable. Yet again customer service was excellent in getting replacement parts and answering questions. The employees actually reached out to me to better understand my situation and come up with a fix. Would absolutely recommend purchasing again especially if they went deeper into competition focused parts or builds.