Hello to m4carbine,net – I’m new here. 
So anyone mod. their AR.15 to this spec.-- or know anything about?
Basically its a stronger recoil spring, heavier buffer, 3 0z. of weight added to the bolt carrier, D ring around extractor, and the gas hole is opened up a bit.
This link makes it sound pretty cool, “The Counterpoise system was designed by Jim Sullivan, Eugene Stoner’s partner in the original AR-15 Project.”
http://www.ketmer.com/armforte/cpoise/index.htm