AAC M4-2000 Blank Firing Adapter (BFA)

AAC M4-2000 Blank Firing Adapter (BFA)

Train smarter and safer with the AAC M4-2000 Blank Firing Adapter (BFA)—a purpose-built solution for realistic blank fire training. Designed to replicate the weight and length of a suppressor, this BFA not only enhances the authenticity of your drills but also ensures proper cycling when using blank ammunition. Built from 6061 Aluminum, it features AAC’s proven 51T Ratchet-Mount system for fast, secure attachment to compatible BLACKOUT and BRAKEOUT muzzle devices. With its bright red finish for clear visual identification, the M4-2000 BFA is a must-have for military, law enforcement, and tactical training environments where safety, realism, and reliability matter most.

51T Ratchet-Mount Quick-Attach System
Enables fast, repeatable mounting to AAC BLACKOUT and BRAKEOUT muzzle devices with minimal point-of-impact shift.

Ensures Proper Cycling with Blanks
Creates essential back pressure to allow semi-auto and full-auto firearms to function reliably with blank ammunition.

Enhanced Training Realism
Mimics the weight and length of a suppressor for more authentic handling during breaching and CQB drills.

Built-In Safety Mechanisms
Redirects hot gases and can potentially catch debris from blank rounds, reducing the risk of injury.

Live Round Catch Capability
Acts as a safeguard by stopping a live round in the event of accidental discharge during training.

Bolt Lockback Functionality
When paired with blank magazines, allows for realistic reloads by enabling bolt lockback after firing.

Bright Red Visual Indicator
Clearly distinguishes the BFA as a training device, preventing confusion with live-fire suppressors.

Specifications

• Caliber: .223 / 5.56mm Blanks only
• Weight: 15 oz
• Length: 6.825″
• Diameter: 1.5″
• Mounting System: AAC 51T Ratchet-Mount (compatible muzzle devices not included)
• Materials: 6061 Aluminum, Stainless Steel
• Color: Bright Red (safety indicator)
• Compatibility: Designed for use with blank ammunition on firearms equipped with AAC 51T muzzle devices