Colt AR-15 9mm suppressed

AR/M4 Vintage ARs
1

I just bought a used B&T Impulse IIA suppressor in 9 mm.

Perfect for my Colt AR-15 9mm

With the HK MP5, perfect pair

2

The two holes in the front cap… do they completely perforate it and vent gas?

3

No its just to insert a tool to unscrew the front cap for cleaning

4

Thanks. That pic makes them look deeper than I thought.

5

Is the suppressor on the Colt threaded 1/2x36? Can you use different thread adapters in it?

6

I roll an Omega 9K suppressors 3 lug on a Colt 6991 10.5 inch. The 3 lug is 1/2x36