westmids1987 Posted January 27 Report Share Posted January 27 (edited) Hello all, after some help please, recently bid at holts auctions and won an investarm 28g o/u for the lad. Took out yesterday, bottom barrel fires probably 70% of the time (indentation on primer when doesn’t fire). Top barrel doesn’t fire at all, although trigger does pull. Disassembled it today and found the top firing pin is broken so that explains the top barrel not firing. Bottom firing pin looks ok to me, but the hammer looks like it has an indentation, could this be causing the weak strike? Had a look online but for the life of me i cannot find spare parts for this gun, my plan is to replace upper firing pin and the lower hammer. Any advice of where to find these parts or any other ideas of what it could be? Don’t want to spend a fortune as i’m sure the lad will soon out grow this one but a shame to scrap it. ps, sorry if any terminology is wrong i am self teaching with the aid of youtube. Edited January 27 by westmids1987 Quote Link to comment Share on other sites More sharing options...
Gunman Posted January 28 Report Share Posted January 28 Gunsmiths make firing pins every week so what's the problem ?If the hammer is " indented a new pin can be easily made to compensate for any wear . Quote Link to comment Share on other sites More sharing options...
westmids1987 Posted January 28 Author Report Share Posted January 28 (edited) 3 hours ago, Gunman said: Gunsmiths make firing pins every week so what's the problem ?If the hammer is " indented a new pin can be easily made to compensate for any wear . Problem is that i’m trying to keep costs to a minimum so trying to fix it myself (if I can source the parts) rather than paying for a gunsmith (don’t know how much they’ll charge but figured it won’t be cheap) Edited January 28 by westmids1987 Quote Link to comment Share on other sites More sharing options...
old'un Posted January 28 Report Share Posted January 28 Someone with a lathe or a local machine shop could knock those parts up in an hour. Sounds like the spring/s are weak if its only putting a small indent in the cartridge. Quote Link to comment Share on other sites More sharing options...
Gunman Posted January 29 Report Share Posted January 29 The striker spring is damaged . This can/could be a source of your problem . Quote Link to comment Share on other sites More sharing options...
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