I compared my stainless Delta Elite to the (new to me) S&W 1006, by the way, I do think it was new, there were no wear marks any where and no powder or fouling, no oil either before I shot it.
Anyway, the Colt weighs 2 lb. 7 oz., the S&W weighs 2 lb. 9+ oz.
The slide is thicker on the S&W but...