FWIW, the M&P45 Compact has the same size grip frame as the full-size version, the barrel and slide are 4" instead of 4.5".

If I feel the need to carry a .45, it's my M&P45 1.0 Compact. My two Colt Series 70s stay in the safe. The combination of reduced weight and less perceived recoil make it a better carry/shooting choice for me.

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Regards,

Chuck