Miroku firing pins question.

Nekarsulm

Hi everyone, a question for those of you who have ever taken out/changed the firing pins on miroku Mk38.

Should there be a coil spring in place to retract the top firing pin?

My Mk38 top firing pin was "sticky" and remained protruding from the action face after firing.

A good shove with your finger nail puts it back in, but obviously not an ideal situation.

So today I took the stock off and

had a look.

Bottom pin moves freely and is spring loaded to retract back onto the action.

Top pin looks to be "home made", as not as nicely machined at the bottom one, also seems to be made of softer steel, as the head is burred.

No spring present either.

Should there be?

civdef

The parts diagram only shows a spring on the bottom pin:

https://www.airgunspares.com/gunspares/shotgun-spares/miroku.html

Spring kits seem to only come with one spring also:

https://www.jnpgunsprings.com/MIROKU-1-MK10-MK38-AND-MK-70-12-GAUGE-FIRING-PIN-KIT-p101702397

Nekarsulm

Thanks for that, I'll keep an eye out for a spare pin.

Somebody was in there before for sure, cause the cross pin that holds the firing pin captive has a few mm broken off its lenght. However they managed to do that..

Rosahane

I think Ardee Sports are Miroku agents. I would be worthwhile giving them a call. Their semi retired gunsmith Tony is very knowledgeable.

Nekarsulm

https://www.boards.ie/discussion/comment/119005471#Comment_119005471

This was a great call, as they sorted out the problem within a few days.

Great service altogether.

The photo shows the part they replaced.