Be careful my friend. The ATF does have a limit on barrel length and the comp (permanent like yours) is considered part of the barrel length.
Removing the comp and not having the paperwork for a SBR, could put you in a big house for a few years, hefty fine, and permanent status of not ever owning another firearm again.
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Life Member NRA
Life Member NAHC
Former President of the ECPT (Eifel Combat Pistol Team)