Hello all I just joined up here today. I currently own a M&P 15-22 rifle and a 686 revolver as well as other pistols and rifles. I love going to the range and shooting the 15-22 with my Grandson. Our last outing we were experiencing misfires or light firing pin strikes. I thoroughly cleaned and lubricated the bolt and am going to switch ammo next time to see if that makes a difference. My other question is I see another member posted about a Volquartsen replacement firing pin. I have used many of their products on other guns with great results. Just wondering if anyone has used one or any other suggestions to fix this. Thanks in advance for any help.