Re: Advanced Armament Cyclic Reducer?
I have used one in an M16 and it did reduce the cyclic rate by about 20%. It's drawbacks are that it is sometimes difficult to get out of the buffer tube as it has a normal buffer face and then a piston that gets hung up on the buffer retainer. AAC provides a ring to make disassembly easy, but that is just something else to loose.
In a semi auto I don't see any benefit of using one, just get a heavy buffer and ensure that it works with the loads you are shooting.