Here is our newest design, intended for those who may use their sight tool more than the usual collector who has say, one, two or three Mosin's at most. Designed with those people in mind who might operate as gunsmiths or collect and shoot Mosin's by the crate-load, this is our standard design, milled out of 1" thick 6061 aluminum, but it has a mild steel threaded insert pressed and pinned into the tool in place of the regular .425" threaded aluminum.