Rutgers mark iv trigger replacement upgrade - Volquartsen Firearms Ruger MK Accurizing Kit

This is a must for your Mark IV. I can’t believe the difference. I was able to install it myself with some help from you tube and several attempts. I would say the hardest part of the install is getting the safety, sear and hammer aligned while reinstalling the hammer pin. Definitely use the small Allen wrench to help you align everything through the other side of the hammer pin, it’s hollow. I was able to get the trigger upgrade for just over $85 through Optics planet using a trigger promo code. Best deal I could find and worth every penny.