maybe it works for some, but i wouldnt have it.
just too much alteration, and that is a major alteration to a gas system already sensitive to muzzle overpressure.
its critical for an m1's propellant combustion to have reached a level of completion before gasses are tapped for operation of the action.
they just knocked some major trusses and gussets off of an already old wooden bridge, and as bridges go, this one bears some serious loads. that aint no mini14 we are looking at. its a full power 30-06.