SilencerCo AC590 ASR Flash Hider 5/8x24 Thread 30 Cal Black Steel

The SilencerCo AC590 ASR Flash Hider delivers superior muzzle flash reduction while serving as a quick-detach mount for ASR-compatible suppressors. This precision-machined flash hider eliminates the bright signature that compromises shooter position during low-light operations.

What Makes This Different

Unlike standard A2-style flash hiders, the AC590 features SilencerCo's proprietary ASR (Active Spring Retention) mounting system that creates a secure, repeatable connection with ASR suppressors. The advanced tooth design breaks up burning gases more effectively than traditional three-prong designs. Internal spring mechanisms ensure consistent lockup with zero point-of-impact shift when transitioning between suppressed and unsuppressed configurations.

Key Features

• ASR quick-detach compatibility for instant suppressor mounting
• Precision 5/8"-24 TPI threading for .30 caliber rifles
• Heat-treated 4140 steel construction with black nitride finish
• Advanced tooth geometry for maximum flash suppression
• Internal spring retention system prevents suppressor walkoff
• Compatible with .308 Winchester, .300 Blackout, and similar cartridges
• Zero point-of-impact shift when adding or removing suppressors

Field testing demonstrates consistent flash reduction across multiple cartridge types, from .300 Blackout subsonic loads to full-power .308 Winchester ammunition. The hardened steel construction withstands rapid-fire schedules without degradation. Hunters appreciate the reduced muzzle signature that prevents game from pinpointing shooter location. Competition shooters benefit from maintained sight picture during rapid strings of fire.

Technical Specs

• Thread pitch: 5/8"-24 TPI
• Material: 4140 steel with black nitride finish
• Caliber compatibility: .30 caliber (.308" diameter)
• Overall length: Approximately 2.6 inches
• Weight: 3.2 ounces
• Mounting system: ASR (Active Spring Retention)
• Country of origin: United States
• Manufacturer warranty: Limited lifetime warranty

Professional armorers and serious shooters choose SilencerCo components for their proven reliability and engineering precision. The AC590 represents the current standard for flash hiders that must perform dual roles as muzzle devices and suppressor mounts.