So a guy as to phone in the changes when you put a shorter barrel on?
You will have to phone in the change when it becomes capable of firing... if you swap barrels/uppers around, not so much, but if it's going to stay that way it is probably a good idea to...
You will have to phone in the change when it becomes capable of firing... if you swap barrels/uppers around, not so much, but if it's going to stay that way it is probably a good idea to...
I was told they were registered as "Frames". So what happens if you swap uppers from longer to shorter barrels or caliber changes, like 5.56 Nato to .300 blk ??