Advanced Armament Company 65011 Flange Indexing Direct-Thread Adapter - 5/8"-24 TPI, Muzzle Brake Design, 1-3/8"-24 TPI Socket

The Advanced Armament Company 65011 is a flange indexing direct-thread adapter designed to convert modular suppressors with industry-standard 1-3/8"-24 threaded rear sockets into a direct-thread configuration for 5/8"-24 TPI host firearms. If you run an AAC or compatible suppressor and want to transition from a modular setup to a direct-thread mount on a rifle or pistol, this adapter bridges that gap without requiring a complete suppressor swap.

What sets AAC's flange indexing design apart is the tool-featured flange with a square shoulder that indexes directly against the rear face of your suppressor, promoting consistent indexing and stability. The muzzle brake structure diverts gas and unburned propellant away from the projectile path, which helps protect the blast chamber baffle from accelerated erosion—a practical detail that extends suppressor service life on high-round-count shooting sessions.

The low-profile form factor keeps added length minimal, and the design should be compatible with most suppressors featuring the standard 1-3/8"-24 threaded socket. This adapter is purpose-built for shooters who already own a quality AAC suppressor and need the flexibility to mount it on multiple firearms with different muzzle threads, or those who prefer direct-thread mounting for a cleaner overall package.

Key Features

• Converts 1-3/8"-24 modular suppressors to 5/8"-24 direct-thread configuration
• Flange indexing with square shoulder for consistent alignment against suppressor rear face
• Muzzle brake design diverts gas and propellant to protect suppressor internals
• Low-profile, unobtrusive design minimizes overall length
• Compatible with industry-standard 1-3/8"-24 threaded suppressor sockets

Specifications

Frequently Asked Questions

What suppressors will this adapter work with?

The AAC 65011 is designed for suppressors with industry-standard 1-3/8"-24 threaded rear sockets. It should be compatible with most AAC and compatible modular suppressors featuring this socket type. Check your suppressor's specifications to confirm socket compatibility before ordering.

Can I use this adapter to mount my suppressor on multiple rifles?

Yes. This adapter allows you to mount a single 1-3/8"-24 socket suppressor on any rifle or pistol with a 5/8"-24 TPI muzzle. If you own multiple firearms with that thread pitch, you can move the suppressor between them using this adapter.

What does the flange indexing feature do?

The flange indexing system includes a tool-featured flange and square shoulder that align against the rear face of your suppressor. This promotes repeatable, consistent indexing and helps ensure stable mounting between the adapter and suppressor.

How does the muzzle brake design help my suppressor?

The muzzle brake structure redirects gas and unburned propellant away from the projectile path, which reduces erosion to the blast chamber baffle. This helps preserve suppressor internal components and can extend the lifespan of your suppressor under regular use.