From Ammoland:

In the case, the US Attorney made the claim that silencers were not arms covered by the text of the Second Amendment. This is what was used by the three-judge panel to claim silencers are not protected arms. The Trump administration could easily reverse the claim, and state silencers are clearly arms protected by the Second Amendment. The US Attorney’s office for the Eastern District of Louisiana has until the 17 of March to send its response to the Fifth Circuit.