Hmm, I have an ACOG, but i didnt like it as it is too long to co-witness with my iron sights. I had the red dot version obv. or co-witnessing would be pointless anyways. I have a tightbore in it at the moment, and im considering a silencer, however i wouldnt run a longer barrel through it, as it would make slim to no difference. Thanks for the silencer idea though.
Matt