AAC Flange Indexing Direct-Thread Adapter | 5/8-24

The AAC Flange Indexing Direct-Thread Adapter 5/8-24 adapts modular suppressors that use an industry-standard 1-3/8-24 threaded rear socket to a direct-thread 5/8-24 mounting interface. Its low-profile design incorporates a “muzzle-brake” structure that diverts gas and unconsumed propellant away from the projectile aperture and helps protect the blast chamber baffle from premature erosion. The flange-indexing variant includes a tool-featured flange with a square shoulder to index against the rear face of a host suppressor for repeatable alignment. Common applications include range testing and changing suppressor mounting between compatible rifles for hunting or precision setup.

Product Specifications

• The manufacturer is Advanced Armament Corp.
• The model name is AAC Flange Indexing Direct-Thread Adapter 5/8-24.
• The adapter provides a direct-thread interface of 5/8-24.
• The adapter is designed for suppressors with rear sockets of 1-3/8-24.
• Manufacturer notes that the Direct-Thread Adapters enable conversion to 5/8-24 and (where applicable) 1/2-28 direct-thread configurations.
• The design is a low-profile adapter featuring a “muzzle-brake” structure to divert gas from the projectile aperture.
• Flange indexing is provided by a tool-featured flange with a square shoulder that indexes against the rear face of a host suppressor.
• The adapter should be compatible with most suppressors with industry-standard 1-3/8-24 threaded sockets.
• The manufacturer-listed weight is 0.19 (unit unspecified in source data).
• UPC: 850036491545

This flange-indexing direct-thread adapter offers a practical, low-profile way to mount compatible suppressors to barrels with 5/8-24 threading while preserving the suppressor’s blast chamber integrity. Its tool-featured flange provides repeatable alignment and the muzzle-brake structure helps manage gas exposure to internal baffles. For shooters who frequently change muzzle interfaces for range work or field use, this adapter provides a simple, robust option to match suppressor and host threads.