B&T Firearms Sd-Adpa2Hub Nato A2 Hub Adapter

The B&T Firearms SD-ADPA2HUB NATO A2 Hub Adapter is a precision attachment interface designed for shooters who run HUB-compatible suppressors on modern tactical or hunting rifles. This stainless-steel adapter bridges your NATO-specification A2 flash hider to any suppressor built on the industry-standard 1.375x24 TPI HUB thread pattern—the same modular system trusted by armed forces worldwide. If you're consolidating your suppressor collection across multiple uppers or swapping barrels without changing your can, this adapter gives you that flexibility without losing a permanent installation.

The HUB design relies on a gate-lock ratchet system that delivers redundant mechanical security: you simply thread it into your suppressor, snug it down with a spanner wrench, and lock it in place. For users who want semi-permanent duty, it accepts thread-locking compounds like Rocksett. The stainless-steel construction resists corrosion even in hard use, and the NATO-standard A2 interface means compatibility with every modern rifle in your safe—5.56 or 7.62.

This is an adapter device only; it requires both a compatible HUB-threaded suppressor and a NATO A2 flash hider to function. Think of it as the missing link between your existing suppressors and barrels that don't already wear HUB hubs.

Key Features

• Stainless-steel construction for durability and corrosion resistance
• 1.375x24 TPI HUB thread pattern—fully compatible with all market HUB suppressors
• NATO-spec A2 flash hider interface
• Gate-lock ratchet system for rock-solid, redundant retention
• Field-serviceable with standard spanner wrench
• Accepts thread-locking compounds for semi-permanent mounting
• Works across 5.56x45mm and 7.62x51mm platforms

Specifications

Frequently Asked Questions

Will this adapter work with my existing suppressor?

Only if your suppressor features a 1.375x24 TPI HUB-compatible thread pattern. This adapter does not work with direct-thread or other attachment systems. Check your suppressor's specs or contact the manufacturer to confirm HUB compatibility.

What do I need besides this adapter to use it?

You need a HUB-compatible suppressor and a rifle barrel or upper receiver threaded with a NATO A2 flash hider. The adapter itself is an attachment device only—the suppressor and flash hider are sold separately.

Can I use this on both 5.56 and 7.62 rifles?

Yes, the HUB adapter is compatible with both 5.56x45mm and 7.62x51mm platforms, as long as both the suppressor and the rifle's flash hider use the HUB standard.

How do I attach it, and can I remove it later?

Thread the adapter into your HUB-compatible suppressor and snug it down with a spanner wrench. The gate-lock ratchet system holds it securely. You can remove and re-install it with the spanner wrench whenever needed. For semi-permanent mounting, apply thread-locking compound like Rocksett before installation.