Mark, the barrel in the center is an original gas trap barrel and marked D-28286 heat lot T-2,
the other two barrels had threaded sleeves installed then machined/threaded to fit the gas trap cylindersAttachment 23633
Mark, the barrel in the center is an original gas trap barrel and marked D-28286 heat lot T-2,
the other two barrels had threaded sleeves installed then machined/threaded to fit the gas trap cylindersAttachment 23633