If you're shopping for anything restricted, it's now completely up to the state police to determine whether you're permitted to have it. They're no longer using NICS. According to a Redditor who called a few FFLs, the FBI sent a letter to all FFLs specifying "all FFLs in MD may no longer use NICS (instant background check that most dealers use) for handgun, "other" (receivers), silencer, or AOW purchases. The release of those items is now at the absolute discretion of the Maryland State Police."
In short, we're even more screwed. There goes my suppressed SBR plan. :\
Edited to add: thanks to FightinBluHen51, I have more info. I need to read more about it.