If you're looking to slow down your BCG to ensure proper cycling then choose from one of LBE's three fine Heavy Recoil Buffers (H1" H2" or H3). The correct buffer weight depends on type and length of barrel" gas port size" gas system length" as well as type of ammo used. LBE Unlimited is a leading producer of US Made gun parts and accessories.
LBE AR15/M16 H1 Heavy Carbine Length Recoil Buffer
Two Steel weights and One Tungsten weight inside buffer body
MADE IN THE USA