The Advanced Armament Company Flange Indexing Direct-Thread Adapter (brand part no. 65011) lets owners of modular suppressors with an industry-standard 1-3/8-24 threaded rear socket convert to a 5/8-24 direct-thread configuration on a compatible host firearm. Its unobtrusive, low-profile body is shaped like a muzzle brake, diverting gas and unconsumed propellant away from the bore’s centerline while protecting the suppressor’s blast chamber baffle from premature erosion. A tool-featured flange with a square shoulder indexes against the rear face of the host suppressor, giving a repeatable, consistent orientation every time it’s installed. AAC built this adapter to work with most suppressors that use the industry-standard 1-3/8-24 threaded socket, not just its own product line.

Key Specifications

• Converts a 1-3/8-24 threaded suppressor socket to a 5/8-24 direct-thread mount.
• Unobtrusive, low-profile body design.
• Shaped like a muzzle brake rather than a plain cylindrical adapter.
• Diverts gas and unconsumed propellant away from the bore’s centerline.
• Protects the blast chamber baffle from premature erosion.
• Features a tool-featured flange with a square shoulder for indexing.
• Indexes against the rear face of the host suppressor for a repeatable orientation.
• Compatible with most suppressors using the industry-standard 1-3/8-24 socket, not just AAC’s own.
• Ships at approximately 0.19 lb, adding minimal weight to the host suppressor.

Frequently Asked Questions

Does this only work with AAC suppressors? No, it’s compatible with most suppressors using the industry-standard 1-3/8-24 threaded socket.

What does the flange do? Its square shoulder indexes against the rear face of the suppressor for a consistent, repeatable orientation on installation.

Does this protect the suppressor? Yes, its muzzle-brake-style body diverts gas away from the bore and protects the blast chamber baffle from premature erosion.

Buy the AAC Flange Indexing Direct-Thread Adapter

Convert your modular suppressor to direct-thread with a proven AAC adapter. Order it from our Advanced Armament Corp lineup, part of our Class 3 parts & accessories selection, at our Lubbock, Texas gun shop as soon as it’s ready to ship.