I make modifications, upgrades and replacement parts for the Thompson 1928 and 1927A1 including machining the stock lower to 1928 specification.  The Auto Ordnance parts and accessories include: If  you want to have your removable GI stock on your semi-auto Thompson you will need  my adaptor installed on your 1927A1. Oh, you don’t have a GI stock?  I  sell  stocks and stock slides  both together and separately.  Also my Auto Ordnance Thompson parts and accessories  can make it more original looking  by adding a bolt hold open switch so that you get the look and feel of the original 1928.  Just turn the new FULL AUTO/SEMI switch and you lock the bolt open for drum installation.  No more fumbling with or losing that pesky third hand. There is also a full-on conversion where I transform the 1927A1 lower frame to look just like the original. I also do SBR barrels and NFA marking.

  • 1928 smooth bolt handle

    $50.00
  • 1928A1 Early Style Safety

    $50.00
  • Checkered Thompson 1927A1 – 28 bolt knob

    $75.00
  • Copy of Colt 1921 checkered actuator handle

    $100.00
  • Custom Payment window

  • Howell Arms Reduced Pull Spring Kit for Semiautomatic Thompson

  • Kahr and West Hurley Semi-Auto Pivot Plate

    $25.00
  • Thompson SMG Pivot Plate

    $50.00
  • Thompson 1921 Checkered Rocker Pivot

    $90.00
  • Thompson 1928 Smooth Rocker Pivot

    $75.00
  • Thompson 1921 Checkered Safety

    $90.00
  • Convert your 1928A1 magazine catch to 1921 style

    $60.00