I would trust my AK74 for bumps in the night, it feeds fine with good mags and from what I gather the 5.45 does nasty things to soft tissue. But my Colt 1911 and Mossberg 590 are my go to options at this point.
Sgt. of Marines, 3rd Award Expert Rifle, 237/250
1st Award Expert Pistol, 382/400
D Co, 4th CEB, Engineers UP!! OEF 21JUN-20SEP2011