I've recently acquired a 45 CQB slide for a future build, both barrel and slide are in pretty good condition. 
My first instinct after cleaning them up was to compare them to my 4563 CQB 45, product code 170106. My plan is to build a 4566 based shooter as my other pistol is a safe queen. Several differences were noted between the two,
My first instinct after cleaning them up was to compare them to my 4563 CQB 45, product code 170106. My plan is to build a 4566 based shooter as my other pistol is a safe queen. Several differences were noted between the two,- Rear sight
- Nitrided barrel vs natural finish
- Slightly different font and positioning on right side markings.
