It's been discovered that swapping out barrels in the old Davis P-32 & P-380 pistols is a bit of a crap shoot. As someone who has been down this rabbit hole, I can vouch for this issue. When I commented that the barrel pins were not aligning on the old BJJA forum, a former Davis employee chimed in with the answer. He explained there wasn't any fixture used to position and align the pistol prior to drilling the hole for the barrel pin. They just drilled a hole and pressed in a pin. A little to the left, a little to the right... as long as they drilled a hole and a pin was inserted, it was good to go. Complicating matters further, the barrel design was changed early on; older barrels had a boss where the barrel met the frame; this feature was removed but there are no records indicating which serial number this change happened.