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The 13.5×1 LH thread pattern doesn't get much attention in the States, but if you're running a Sig MPX or one of the many European 9mm barrels cut with metric left-hand threads, your muzzle device options thin out fast. SilencerCo's ASR Flash Hider (AC1561) fills that gap nicely, giving you a proper 3-prong flash hider that doubles as the mounting point for SilencerCo's ASR quick-detach suppressor system.
The ASR (Active Spring Retention) system is the real draw here. Thread this flash hider onto your barrel once, and any ASR-compatible SilencerCo can go on or come off in seconds with one hand. The locking ring keeps the suppressor from rotating or backing off during long range sessions, so you're not stopping every few mags to check torque. If you own more than one ASR-mounted host, you already know how convenient it is to swap a single can between guns without wrenching on anything.
Anyone who's shot behind a typical 3-prong device knows the tuning-fork effect, that lingering ring after every shot that gets old in a hurry. SilencerCo built resonance suppression into this design specifically to eliminate it. Run it bare and you get a quiet, effective flash hider that noticeably cuts visible signature in low light. The steel construction shrugs off heat and hard use, and the matte black finish blends in with just about any factory barrel and handguard setup.
Installation is straightforward on any 9mm barrel threaded 13.5×1 LH. Just remember these are left-hand threads, so it tightens the opposite direction from what most American shooters expect. Follow SilencerCo's mounting instructions for torque and thread prep and you're set. Whether you're prepping an MPX for suppressed duty or just want a better muzzle device on a metric-threaded pistol barrel, this is a simple upgrade that pays off every time you hit the range.
The 13.5×1 LH metric left-hand thread is most commonly found on the Sig Sauer MPX and on many European 9mm threaded barrels, including several HK tactical pistol models. Check your barrel's thread specs before ordering, since 1/2×28 is the more common American 9mm pattern and the two are not interchangeable. SilencerCo makes ASR flash hiders in both patterns, so match the device to your barrel.
This flash hider serves as the muzzle-side mount for SilencerCo's ASR quick-attach system, which works with most of their centerfire suppressor lineup, including the Hybrid 46, Omega 36M, Omega 300, Chimera, Saker, and others that accept ASR mounts. The one-hand-on, one-hand-off design lets you move a single can between multiple hosts fitted with ASR muzzle devices. Your suppressor will need the ASR mount installed to pair with it.
No, and that's one of its best features. SilencerCo built resonance suppression into the prong design specifically to eliminate the tuning-fork ping that plagues most competing 3-prong devices. It runs quiet whether you're shooting with the suppressor attached or using it as a standalone flash hider.
Absolutely. It functions as a full-time 3-prong flash hider on its own, doing a solid job of reducing visible muzzle flash in low-light conditions. Many folks install it as their permanent muzzle device and only throw the suppressor on when they want it, which is exactly what the ASR system was designed for.
| UPC | 817272016901 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | AC1561 |
| Caliber/Gauge | 9mm |
| Color | Black |
| Length | 6.5 |
| Model | |
| Package Height | 1.3 |
| Package Width | 4.7 |
| Product Type | Accessory-Silencer Accessories |
| Shipping Weight | 0.25 |
| Thread Pattern | 13.5×1 LH tpi |
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