01-03-2014, 07:17 PM
What I use is 45 1911 but given the choice of SBR or Bullpup, in theory and the given circumstances I'd go with the Bullpup & 5.56x45. Quick handling, fast follow-up shots and controllable penetration. That said, to me the bullpup is an unknown entity, so in reality it'd be the AR-15 SBR.
