no more cobra valves …. out of business currently, JSAR has no time to produce the balanced valve ! but we do have Tim Hill !!! his valve works well ! ive had them all in my mrod regulated , the tim hill works well, I wish we could get the nylon hammers with brass insert from JSAR, with Tim Hills lightest hammer spring , that's in my gun and is sweet smooth easy cocking with free flight space even with a stock end cap. but I do have a JSAR twin spring end cap in my mrod, , it has the most adjustment with a nice locking set screw to keep your adjustment from changing , but Tim Hill hammer springs are short enough to allow for free flight using your stock end cap spring adjustment, and if every one took care of you as well as Tim Hill does you would see more people with big smiles on their faces!!! Tim Hill has been awesome helping me! cant beat Tim Hill !!!!!!