Im wondering how much of a pain it would be to start with a title 1 gun 18.5" bbl plus short pad, then form 1 it and have the barrel cut to the "normal x95" length of 13". Would there be any screwing around with the gas system other than just increasing the size of the gas port in the barrel (and a handguard/top rail swap)? Presumably there is a specific size for the 13", 16.5" and 18.5" models and they arent all the same?
On that note, I wonder if one could leave the smaller hole in the 18.5" barrel so it would be undergassed unless suppressed, and that would cut back on gas-to-the-face.
Im also wondering how much clearance there is in the handguards and how far you could reasonably chop the barrel less than 13" (would be kind of neat to have a nested-in-handguard-always-attached suppressor)