ThompsonMachine.net




  HOME


  Products
     3 Axis CNC Mill
     3 Axis CNC Mill Conversion Kit
     9x20 CNC Lathe Conversion Kit
     42 Semi Auto Grip Housing
     Gun Related
     CNC Mill Gallery

     Misc Heavy Equipment We have Built      Heat Treat Oven      Powder Coat Oven

  My Gun Projects
     22 pistol
     DSHK SEMI
     AMD
     Krink SBR
     PPS 43 semi
     AK Pistol
     My vz58 semi
     HK 91 Build
     7.62x54 PSL
     AM 275 Pistol
     42Semi Auto
     42Semi Bolt
     Thompson 1928
     Bulgarian ak74s
     Yugo ak
     AR-70
     50 bmg Rifle
     22 Gatling
     PKM
     Skorpion
     Misc

  Contact



    My Gun Projects

    PPS 43 semi build


    Started working on installing a floating firing pin in the pps 43 bolt yesterday. The fixed firing pin is replaceable and just retained by the extractor. Just compress the extract spring and the extractor should drop out and the firing pin will fall out of the front of the bolt. The bottom of the hole is irregular as its split by the pocket for the extractor. I machined a piece of O-1 steel to .27 diam and pressed in the hole to support the bit , clamped the bolt in the 3 jaw chuck and then drilled the firing pin hole thru to the cross hole that the return sprin passes thru.

    clamped the bolt in the milling vise with the rear of bolt upward then drilled a hole thru to the return spring pocket. I now have a bolt with a 5/32 hole thru it lengthwise, not really sure whats next. Thinking I might cut the rear 1.5" of the bolt off and use it as a striker. any thoughts greatly appreciated




    here are a few more pics of the bolt,

    here is the bushing pressed in the bolt face, I enlarged the hole for a depth of .4" creating a shoulder, then machined a bushing with .09 diam hole and pressed it firmly against the bottom of the hole in the bolt face. Shouldnt ever move as the shoulder will keep it from bieng pushed rearward.


    You can see the .25" wide groove in the top of the bolt for the pin in the reciever that blocks insertion of the FAbolt

    this pic show firing pin protrusion and the next is with the firing pin retracted

    appreciated

    finished up bolt , drilled striker for spring, drilled bolt for clearance of spring guide. and machined delrin buffer.



© 2005 Thompson Machine  Sunny  Florida;  USA