11.5" Barrel & Blank Firing Adaptor Help

AR/M4 AR Technical Discussion
1

I know the 20" rifles use the red blank firing adaptor and the 14.5" rifles use the yellow, but will the yellow work with a 11.5" barrel?

On a separate rifle, will the Yellow BFA work with a 14.5" rifle that has the Vortex Flash hider on it?

Thanks

2

You would need an A2 birdcage because the BFA is designed to slide over the ring on the flash hider.

3

The Vortex has a NSN, and has the same ring that the A2 has.

4

Why do you need a BFA? (just asking)