Colt 1911 22 conversion unit ?

[johns44]

Hello all, is there a way to tell when a colt1911 22 conversion unit was made? pre series 70 ,post ser.70.. are the markings different,  are the sights different,, plain vs adj., any help would be great  thank you

[St. George]

The key is the sights.

Late Conversion Units feature sights very similar to those seen on the Gold Cup - with an under-cut front blade.

Earlier ones were Colt-Stevens - like the ones seen on 2d Generation Woodsman pistols - but usually seen with a 'pyramidal' front blade.

Vaya,

Scouts Out!