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The Sig Sauer Clutch-Lok QD Flash Hider handles two jobs at once. Thread it onto your 5.56 or .223 rifle and it knocks down muzzle flash on its own, then becomes a rock-solid mounting point the moment you want to run a Sig SLH or SLX suppressor. No swapping muzzle devices, no fussing with wrenches at the range. You just clutch the can on and go.
The body is machined from stainless steel with a matte black finish, so it holds up to heat and rough handling without looking beat up after a season of use. Threads are the standard 1/2×28 pattern found on most 5.56 barrels, and the whole unit stays compact at right around 7.5 ounces of tough hardware sitting on your muzzle.
This is the version to grab if you're running a standard barrel rather than a Sig Taper-Lok setup. The 90-degree shoulder squares up against a conventional shoulder for a repeatable, secure lockup. If your barrel is a Sig Taper-Lok, that's where the 25-degree taper version comes in, so it's worth double-checking which shoulder your barrel is cut for before ordering.
The real payoff shows up when you own one of Sig's Clutch-Lok suppressors. The QD interface gives you fast, consistent attachment with alignment that returns to zero shot after shot, which keeps your point of impact honest when you pull the can and run bare. That makes it a smart pick for training days, range sessions, or any modular AR build where you want the option to run suppressed without committing to it every trip.
A quick tip from behind the counter: Sig recommends letting a qualified gunsmith handle the install to get the timing and torque right. Do that once and this thing just works.
This is a proprietary QD mount built specifically for Sig Sauer's Clutch-Lok SLH and SLX suppressors in 5.56. It won't interface with cans from other brands or with Sig's other mounting systems. If you already run or plan to buy an SLH or SLX, this is the muzzle device that lets you attach it.
The 90-degree shoulder is made for standard, non-Sig barrels with a conventional shoulder, which covers most AR-15 barrels out there. The 25-degree version is designed for Sig Sauer Taper-Lok barrels. Check how your barrel's shoulder is cut before ordering, and when in doubt this 90-degree model is the safe bet for a typical build.
Yes. When you're running the rifle bare, it functions as a flash hider and cuts down the visible flash signature at the muzzle. That helps preserve your vision in low light, so it earns its spot even on days you leave the can at home.
You'll need a properly threaded 1/2×28 barrel and the right tools to time and torque it correctly. Sig recommends having a qualified gunsmith handle the install to make sure everything is squared up and secure. Getting it done right the first time means dependable suppressor alignment every time you mount up.
| UPC | 798681656189 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | SL-556-12X28-90DEG-F |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Length | 7.5 |
| Model | |
| Package Height | 1.2 |
| Package Width | 4.1 |
| Product Type | Accessory-Silencer Accessories |
| Shipping Weight | 0.2 |
| Thread Pattern | 1/2"x28 |
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