yes, they did, both in a "pre" prefix gun, the late 67-68?? and then in the #30 (1969) and #31 prefix guns, and from what I recall the 'late' Bob C. telling me the majority were in the #31 prefix,or the "late" old model versions....how many??? have no clue ,hopefully Chet15 will chip in with some "numbers" ( quantities)???