7/27/2019 PPs Semi-Auto FCG
1/5
Semi-Auto PPs FCG
by prsxr
This design uses the original trigger for authenticity, and
allows the original safety to work the way it
was supposed to. The hammer and sear are US made. It now has a
traditional sear/disconnector
arrangement, with the disconnector as a spring loaded plunger
inside the disconnector. It's tough fittingall the needed parts in
the space available, but it works.
I am offering this as PPS43. I believe it will also work for
KP44, but will take more fitting on the
builder's part to make sure it works. I will need the trigger
from your parts kit so that it can beincorporated into the
unit.
Here's what's included:
FCG box (unassembled, but with interlocking tabs. Easy TIG
weld)
Hammer blank
Hammer spring (stock AR-15)
Sear (fully machined)Disconnector spring material (grind to
length)3 5/16" x 3/4" pivot pins
3 3/32" spring pins (retains disconnector, and connects transfer
bar)
Trigger spring (hand wound)
trigger plate (drill and tap for trigger pivot pin retaining set
screw)
What's not included: (See picture for comparison of blank and
finished parts)
Trigger-- Use your own, requires some slots dremeled in, the
transfer bar pin hole, and short tubesections welded on each
side.
Disconnector-- -Made from 5/32 steel pin. Has a bevel on the
end, and a recess for the retaining pin.
THis can be made by dremel and file.transfer bar--- made form
1/4" square stock. has a 3/32 hole in each end. File in various
places for
clearance, drill the last hole on assembly to ensure proper
trigger location.
Hammer -- it's included but here's what you'll have to do to it:
Machine the leg for width on both sides
to accommodate the AR-15 hammer spring. Weld on tube stubs over
the pivot pin (might be possible toomit this step), grind the catch
face to allow clearance past the disconnector. Clean up striking
face.
None of this work is complicated, and with the exception of the
welding, can be done with commontools.
