Edited by Robgunbuilder, 17 August 2010 - 06:34 PM.
Questions About West Hurley Model 1928
Posted 16 August 2010 - 11:43 PM
Posted 17 August 2010 - 09:35 AM
The Thompson bolt assembly has a small triangular shaped piece called
the hammer that pivots in the front of the bolt. When the bolt slams shut
the hammer contacts the front face of the bolt pocket and pivots pushing
the firing pin forward to fire the cartridge. The slot for this is precisely
machined in the front of the bolt.
I am going to guess that since you are new to Thompsons you and
your friend are confusing the later M1A1 bolt which has no hammer with
the original M1928 bolt.
It is unlikely that someone would machine a bolt in the way you
describe since, practically speaking, Thompson bolts are too hard to
machine. That slot was machined before the bolt was hardened.
Back when West Hurley made their Thompsons there were no breech
oilers available. It was a part that was impossible to find. So they made
and shipped the guns without them and as a matter of convenience told
everyone that the breech oiler was not needed. A standard breech oiler
should fit in the receiver and you should use one.
Welcome to the board!
Posted 17 August 2010 - 06:42 PM
Posted 17 August 2010 - 07:12 PM
the safety on SAFE with the bolt closed. The earlier bolts did
not have that, and you could drop the gun in such a way that
the bolt would move back far enough to clear the mag and feed
a round - and fire it when it returned forward - but not far
enough back to be held by the sear.
With tens of thousand of guns in the hands of troops I guess
this "drop gun misfire" was enough of a concern that they fixed
it in the M1 and M1A1 guns.With the bolt shut and the safety on
SAFE the sear and the bolt are locked - the sear can't drop and
the bolt can't retract.
Here we are years later and the risk of having a heart attack
if you drop your Thompson is probably greater than the risk of
an accidental firing...
Posted 17 August 2010 - 08:13 PM
Edited by Robgunbuilder, 17 August 2010 - 08:15 PM.