25-80 usd
The first model 732 guardsman was made from 1959-1973.the second model was made from 1974-1986.
Impossible to answer without a serial number.
Revolvers are not intended to be taken apart by the users. There are no manuals for many older revolvers. A lot of these have been brought to a gunsmith in a bag to be re-assembled. Don't. Seriously- don't.
50-125
50-125
midway usa has a pistol grip that fit h&r and NEF shotguns (shop by make and model )go down to h&r on list and go from there
I am not familiar nor do I know of an H&R Model 943 "pistol" - could this be a Model 949 revolver?
25-100 dollars
50-125
50-150
H&R- Better known as Harrington & Richardson, a very prolific American firearms manufacturer.