Buffer weight for a 12.5 inch?

[BC98]

A non-BCM data point:

My 12.5" Centurion runs great with an A5H3 + BCM rifle spring. I do think my gas port is slightly smaller than the BCM barrel though (mine measured out around .065", I believe).

[diving dave]

Ok thanks much for all the responses...I have the standard Spikes buffer in there that came with the lower. It seems pretty "snappy" when running suppressed, so thats the main reason I was wondering.

[Col_Crocs]

A non-BCM data point:

My 12.5" Centurion runs great with an A5H3 + BCM rifle spring. I do think my gas port is slightly smaller than the BCM barrel though (mine measured out around .065", I believe).

Nice... I was planning on selling mine off but looks like I might just keep it.

Dave: You'd be better served running an H2. The spikes buffer is a marketing gimmick IMHO and doesn't weigh enough at somewhere between an H1 and an H2.