I finally got my Pacific Tool and Gauge DBM with a 10 rnd magazine. Only they sent me a AW magainze instead of a AICS magazine which fits the dbm, but not the action since AW is stagger feed but that can be taken care of.

What I really want yo know tho, is how do you find out how much space you need between the DBM and action? To close or to far and not everything is gonna fit very well.

Do you just tinker with the pillar height until the magazine and trigger assembly fits good together? I'm somewhat lost at this.