I just built my lower using an Olympic forged piece and a DPMS parts kit. The trigger has no movement and appears to be in the pulled position. I cannot install the safety selector due to the rear part of the trigger being in the way. When i push the hammer back it locks on the disconnector, but never makes contact with the front part of the trigger. The only way for me to release the hammer is by pressing the rear of the disconnector down to release the hammer.
What is the chance of the lower receiver being made wrong or the trigger pin hole being too low in the receiver?
I don't have any special tooling to measure from the pivot and takedown pins down to the trigger pin hole, but if i knew the proper distance from the trigger pin hole to the bottom of the inside of the receiver, i'd measure that.