replacement piston for the S&W 77a

[--ped--]

as the old parachute seals get hard they stop weorking and whilst you can get them sent from the US they're pricey so i did an o ring piston head for it

first i remove the oldhead which is pressed on and thread it 1/4" unc and screw on a chunk of ally -i can do brass or delrin


then the head is machined to size and given a quick polish

[mdunn]

Another top job that Paul,wish I had the skills to do that,Atb mick

[--ped--]

cheers mate

[ratbuster2240]

I get a lot of satisfaction seeing classics being returned to working condition, thanks for sharing these skills.

The original seal was probably 50 years old, had it held up well?

[--ped--]

it was on it's last legs and whilst it still was working i don't think it would last much longer