The H2 buffer isn't the lightest buffer out there. Also, there are lighter bolt carriers available. I'd try reducing mass behind the bolt before I reduced the spring strength to keep feeding reliable. JP makes some light bolt carriers. BravoCo. has standard and H weight buffers.
"No, it's not a silencer. This little doodad is my own invention. I call it a loudener." --Sledge Hammer
Last edited by Willie Lowman; March 10, 2013 at 12:25 PM.