Please reach out to the manufacturer as this information is not made available.
Please reach out to the manufacturer directly as they do not make this information available.
This will be a weighted buffer.
The correct buffer weight depends on many variables - your buffer tube length (carbine or rifle length), gas system length, the gas port size, spring,ammunition, and if a suppressor will be used.
AR-15 carbine H3 buffers are direct swaps for Armalite AR-10 carbine buffers - the size and weight are identical. DPMS LR-308 carbine buffers are lighter, and will benefit from an AR-15 H3 carbine buffer.
Mark H.