Armaspec Hub Adapter, 1-3/8×24, .9in Internal Thread

The Armaspec Hub Adapter (brand part no. ARM891-BLK) provides a 1-3/8×24 external thread with a 0.9-inch internal thread, letting shooters mount a compatible suppressor hub to a larger-diameter host interface. It is machined from 17-4 stainless steel and heat treated, then finished with a QPQ coating for added corrosion and wear resistance. This adapter is built specifically for Armaspec’s HUB mounting system, giving it a precise, repeatable index for suppressor mounting.

Key Specifications

• Machined from 17-4 stainless steel and heat treated for strength and durability.
• Finished with a QPQ coating for added corrosion and wear resistance.
• Cut with an external thread of 1-3/8×24 to mount to the host interface.
• Bored with a 0.9-inch internal thread to accept the suppressor’s mounting hub.
• Built specifically for the Armaspec HUB mounting system.

Frequently Asked Questions

What does this adapter connect? It provides a 1-3/8×24 external thread with a 0.9-inch internal thread, connecting a compatible suppressor hub to a larger-diameter host interface.

What is the finish on this adapter? It is machined from 17-4 stainless steel, heat treated, and finished with a QPQ coating for corrosion and wear resistance.

Buy the Armaspec Hub Adapter

Get a durable, precisely machined hub adapter for your Armaspec-compatible mounting system. Order it from Armaspec’s gunsmithing tools and supplies lineup, and our Lubbock, Texas gun shop will ship it out fast.