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Diligent Defense Co
The Diligent Defense Co Muzzle Device 1/2X28 is a precision-machined suppressor mount built for shooters running .30 caliber and smaller rifle cartridges. If you're building a suppressed rifle setup and need a rock-solid brake-to-can interface, this adapter handles the job with industrial-grade durability. It's engineered to work with major suppressor platforms—Q, Dead Air, Rugged, Surefire, and others that use the standard .900-24 mount pattern—so you're not locked into one can ecosystem.
Built from 17-4 stainless steel and heat-treated to H900 specification, this muzzle device delivers the kind of precision that matters when you're threading suppressors. Every critical alignment feature is machined in a single setup, which means no tolerance stack-up and no shimming required to get your can indexed right. The 360-degree port design eliminates the fiddling; just thread it on and go. At 1.9 ounces and 1.45 inches long, it adds minimal length and weight to your setup.
Installation and removal are straightforward with the 13/16-inch hex rear—any standard wrench gets the job done. You'll notice variation in the heat-treat finish across the part; that's normal in H900 treatment and purely cosmetic. It has zero effect on strength or performance. Whether you're suppressing a precision rifle for long-range work, a hunting build, or a range gun, this adapter is engineered to stay put and hold zero.
| Thread Pattern | 1/2X28 |
| Bore Size | .33 (for .30 cal and smaller) |
| Material | 17-4 PH Stainless Steel |
| Heat Treatment | H900 |
| Suppressor Mount Compatibility | .900-24 (universal mount pattern) |
| Rear Interface | 13/16 hex |
| Length | 1.45 inches |
| Weight | 1.9 ounces |
This device uses the standard .900-24 suppressor mount pattern, which means it's compatible with any can designed for that interface—including Q, Dead Air, Rugged, Surefire, Atlas, Rearden, and others. Check your suppressor's mount specification to confirm compatibility.
No. All critical alignment features are machined in a single setup, which ensures precision fit without shims. The 360-degree port design means you don't need to worry about orientation either—just thread it on.
The .33 bore is rated for .30 caliber and smaller cartridges, which covers .308 Winchester, 6.5 Creedmoor, .223 Remington, .22-250, and similar. Verify your specific round before purchase if you're unsure.
No. Heat-treat finish variation during H900 treatment is normal and purely cosmetic. It does not change the device's strength, durability, or effectiveness.
Diligent Defense Co
The Diligent Defense Co Muzzle Device 1/2X28 is a precision-machined suppressor mount built for shooters running .30 caliber and smaller rifle cartridges. If you're building a suppressed rifle setup and need a rock-solid brake-to-can interface, this adapter handles the job with industrial-grade durability. It's engineered to work with major suppressor platforms—Q, Dead Air, Rugged, Surefire, and others that use the standard .900-24 mount pattern—so you're not locked into one can ecosystem.
Built from 17-4 stainless steel and heat-treated to H900 specification, this muzzle device delivers the kind of precision that matters when you're threading suppressors. Every critical alignment feature is machined in a single setup, which means no tolerance stack-up and no shimming required to get your can indexed right. The 360-degree port design eliminates the fiddling; just thread it on and go. At 1.9 ounces and 1.45 inches long, it adds minimal length and weight to your setup.
Installation and removal are straightforward with the 13/16-inch hex rear—any standard wrench gets the job done. You'll notice variation in the heat-treat finish across the part; that's normal in H900 treatment and purely cosmetic. It has zero effect on strength or performance. Whether you're suppressing a precision rifle for long-range work, a hunting build, or a range gun, this adapter is engineered to stay put and hold zero.
| Thread Pattern | 1/2X28 |
| Bore Size | .33 (for .30 cal and smaller) |
| Material | 17-4 PH Stainless Steel |
| Heat Treatment | H900 |
| Suppressor Mount Compatibility | .900-24 (universal mount pattern) |
| Rear Interface | 13/16 hex |
| Length | 1.45 inches |
| Weight | 1.9 ounces |
This device uses the standard .900-24 suppressor mount pattern, which means it's compatible with any can designed for that interface—including Q, Dead Air, Rugged, Surefire, Atlas, Rearden, and others. Check your suppressor's mount specification to confirm compatibility.
No. All critical alignment features are machined in a single setup, which ensures precision fit without shims. The 360-degree port design means you don't need to worry about orientation either—just thread it on.
The .33 bore is rated for .30 caliber and smaller cartridges, which covers .308 Winchester, 6.5 Creedmoor, .223 Remington, .22-250, and similar. Verify your specific round before purchase if you're unsure.
No. Heat-treat finish variation during H900 treatment is normal and purely cosmetic. It does not change the device's strength, durability, or effectiveness.
