These C.Q.B models are hard to keep straight, granted not nearly as bad as the 945. Your pistol certainly looks like product code 170127, but it is obviously not based on the box label.

Some excellent C.Q.B. information:
Confirmed production nos. on 45 CQB models
.45 PC CQB Article

Info from SCSW-4 (page 434):
170105 M-4566 4" 8SH CQB Stainless 45 ACP
170106 M-4563 4" 8SH CQB Alloy 45 ACP Black
170118 M-4563 4" CQB Two Tone
170127 M-4566 4" 8SH 45 CQB AS Two Tone

A nice picture of all the models (clockwise from upper-left = 170118, 170106, 170127, 170105):


Your production letter will certainly help straighten things out. I'm planning on splitting the 170105 into 170105(A) and 170105(B) to capture your variation.

vigil617, it looks like your thread may need to be updated too.