i have been using a dead bang non captive recoil guide and spring for about a year now. I think it is far superior to the glock OEM and others.
he used to have a demo on his web page but it looks like its gone. It really reduces muzzle flip and softens recoil.
"Life shouldn't be a journey to the grave arriving in an attractive well preserved body, better to skid in sideways, cigar in one hand, favorite beverage in the other, body thoroughly used up, totally worn out, screaming WAA HOO - What a Ride!"