KAW Valley H2 4.3 OZ Buffer

S and H2 models feature high density tungsten powder weight - weight accurate to within +/- 0.005 oz.
H3 model features 3 high density tungsten weights - weight accuracy may very (between 5.3 - 5.5 oz.)
S and H2 models eliminate annoying buffer "rattle"
Increases weapon reliability
Reduces wear of critical internal action parts
Reduces felt recoil and bolt bounce