Why are the Republicans delaying a vote on a gun silencer bill?

Tuckahoe - Why are the Republicans delaying a vote on a gun silencer bill? Are the mainstream Republicans led by Ryan and McConnell sabotaging Trump again? Trump needs all the legislative wins he can get, and this is only going to further hurt him. It is now looking like he has flip-flopped yet again on Second Amendment rights. Americans need guns to protect themselves, and sometimes the best way to take down a target is with no report from your rifle.