SilencerCo AC1570 is the SKU for the ASR Flash Hider in the 1/2x28 thread pitch with a .36 caliber (9mm) bore.
It is a 3-prong quick-detach (QD) muzzle device designed primarily as a flash hider while serving as the host for SilencerCo's Active Spring Retention (ASR) suppressor mounting system.
Key Features
- Thread pattern: 1/2x28 (common on 9mm pistols, PCCs, and some 5.56 rifles).
- Bore: .36 caliber — rated safe for 9mm and larger, but the larger bore means it's typically used on 9mm platforms or where over-bore isn't an issue.
- Design: 3-prong flash hider that effectively reduces muzzle flash (helpful in low-light shooting). It includes a patent-pending resonance suppression feature that eliminates the "tuning fork" ping or ringing common with some other 3-prong devices.
- ASR compatibility: Works with SilencerCo's ASR mounts for one-hand-on, one-hand-off quick attachment/detachment of compatible suppressors (e.g., Omega series, Hybrid, Saker ASR, Harvester, etc.). The ASR system locks securely and resists loosening under fire.
- Material & Finish: Steel construction with black nitride finish for durability and corrosion resistance.
- Additional benefits: Helps reduce felt recoil slightly and provides a solid mounting point without needing to remove the device when switching between suppressed and unsuppressed use.
Common Uses
- 9mm platforms — Pistols, pistol-caliber carbines (PCCs), or submachine guns.
- Some users mount the 9mm (.36 cal) version on 5.56 rifles (the larger bore doesn't cause accuracy or safety issues on smaller calibers in this context, though the dedicated .30 cal / 5.56 version may offer slightly better flash hiding).
- Pairs well with multi-caliber suppressors like the Omega 36M when using the appropriate ASR mount.
ASR Mounts:
Alpha: Harvester 300 and Omega K Series, Octane Series
Bravo: Harvester EVO, Hybrid 46, Harvester 338, and Omega 300
Charlie: Saker ASR Series, Chimera 300, Omega 36M, and Hybrid 46M
