After trying a few different combinations in search for reliability and the softest recoil possible, I run an 8oz KAK buffer with a spikes tactical standard strength polished carbine buffer spring. My gun is very flat shooting with very low recoil and functions very well. With that being said I’m never satisfied and have since purchased a (RB5015HD HEAVY DAMPENED) 9mm hydraulic buffer from Kynshot and will be looking to purchase a 10oz buffer next just to be 100% that this is the absolute best set up. I will update the forum with my findings when able. -ps also testing on Extar EP9
