Description
The AAC (Advanced Armament) Hub Adapter is a suppressor mount, threaded 1.375X24.
A mount is how the suppressor attaches to the host. Direct-thread mounts screw onto the barrel's own threads; quick-detach mounts lock onto a muzzle device already fitted to the barrel, so the can comes on and off without unscrewing it each time.
1.375×24 is the HUB standard – a deliberately cross-brand thread, so a HUB mount fits any suppressor with a HUB rear cap regardless of who made it.
Mounts are system-specific. A mount is cut for a particular suppressor's rear threads, so it has to be the one made for your can – the exception is the HUB standard, 1.375×24, which is shared across brands by design.
This is a part, not a regulated item. Mounts, pistons, caps and muzzle devices are not NFA-controlled and ship directly to your address – the suppressor itself is the registered item.
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