Sterling dimension

What is the length of a sterling receiver as seen in the picture below?

 

LENGTH BUTT RETRACTED19.0 IN (483MM)

LENGTH BUTT EXTENDED 27.17IN (690MM)

WEIGHT 6LB.0 (2.72KG)

BARREL 7.80IN (198MM)

SOURCE THE GREENHILL MILITARY SMALL ARMS DATA BOOK

I CAN TAKE SOME PHOTOS OF MY STERLING IF THIS WILL HELP.

 

I'd like to know the exact length of just the receiver, I've heard it was 18-3/4" but I just want to make sure. Would it be possible for you to measure the length of just the receiver on your sterling?

 

At the points you indicate, mine is 18-1/16".

SAS

 

Thanks a million Sidewinder