My favorite bucking has always been the firefly bucking. I have always had great results with that. It gives a great air seal and they seem to last forever.
http://www.airsoftatlanta.com/Firefly-Hop-Up-Bucking-for-VSR-10-Hard-also-fit-p/63320.htm
They have a soft version as well. I would give this a 5/5 rating.
http://www.airsoftatlanta.com/Firefly-Hop-Up-Bucking-for-VSR-10-Hard-also-fit-p/63320.htm
They have a soft version as well. I would give this a 5/5 rating.
