bolt carrier - opinions/experience

[AZHTfreak]

Drop a standard carbine buffer and spring in it and see how it runs. If it needs more buffer weight. You can pick up tungsten buffer weights cheap and add them to your buffer one at a time and test to see how it goes.

Go here, you can buy 3 or 6...
https://midwesttungsten.com/tungsten-h3-...ach-ar-15/