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Diligent Defense Co
The Diligent Defense Co DTF-STI is a titanium suppressor engineered for shooters running 8.6 blackout and larger magnum calibers who demand serious sound reduction without sacrificing portability. At just 9.2 ounces, this S-length can is built on proven Enticer baffle technology—the same design that earned some of the quietest decibel readings on record in independent testing. If you're building a subsonic 8.6 BLK rig or running full-power .338 Lapua loads, the DTF-STI delivers the suppression and lightweight handling that separate a purpose-built setup from a compromise.
Titanium construction keeps weight to a minimum while handling the heat from sustained fire. The suppressor accepts both Bravo-pattern and 1-3/8"-24 mounts, giving you flexibility across different host rifles. Direct-thread options are available separately for dedicated applications. The graphite black finish resists corrosion and blends with modern rifle aesthetics. Diligent Defense Co backs the unit with a no-nonsense lifetime warranty as long as you follow the recommended barrel-length minimums and firing schedules—a commitment to quality that shows confidence in the design.
Whether you're hunting with heavy subsonic loads, pushing supers downrange at the range, or setting up a dedicated 8.6 platform, the DTF-STI occupies a specific role: maximum suppression in a lightweight package. The Enticer baffle geometry is proven to deliver, and the titanium construction means you won't feel it hanging on your rifle. This is a suppressor for the shooter who understands the caliber and won't compromise on sound signature or portability.
| Caliber Range | Up to .338 Lapua Magnum / 8.6 Blackout (0.400" bore) |
| Material | Titanium |
| Length | 6-3/4" |
| Diameter | 1-5/8" |
| Weight | 9.2 oz |
| Mount Options | Bravo-pattern or 1-3/8"-24 thread (direct-thread M18 x 1.5 available separately) |
| Finish | Graphite Black |
| Recommended Minimum Barrel Length (.338 LM) | 22" |
| Recommended Minimum Barrel Length (8.6 BLK Subs) | 8" |
| Recommended Minimum Barrel Length (8.6 BLK Supers) | 12" |
| Firing Schedule (.338 LM) | 10 shots before cool-down |
| Firing Schedule (8.6 BLK Subs) | Unlimited (maintain below 800°F) |
| Firing Schedule (8.6 BLK Supers) | 30 shots before cool-down (maintain below 800°F) |
| Warranty | Lifetime (when barrel length and firing schedules are followed) |
| Included Accessories | DDC sticker |
The DTF-STI is rated for calibers up to .338 Lapua Magnum and 8.6 blackout with a 0.400" bore. It's designed specifically for the 8.6 BLK community, handling both subsonic and supersonic loads within the recommended firing schedules and barrel-length minimums.
The DTF-STI accepts both Bravo-pattern mounts and 1-3/8"-24 thread attachments. Direct-thread options in M18 x 1.5 titanium are available separately for dedicated 8.6 BLK applications.
It depends on your load. With 8.6 BLK subsonic ammunition, you can fire unlimited rounds as long as you keep the suppressor below 800°F. Supersonic 8.6 BLK requires a cool-down period after every 30 shots. With .338 Lapua, allow a cool-down after 10 shots.
Diligent Defense Co includes a lifetime warranty as long as you follow the recommended barrel-length minimums for your caliber and stay within the firing schedules. The warranty is voided if these parameters are not followed.
Diligent Defense Co
The Diligent Defense Co DTF-STI is a titanium suppressor engineered for shooters running 8.6 blackout and larger magnum calibers who demand serious sound reduction without sacrificing portability. At just 9.2 ounces, this S-length can is built on proven Enticer baffle technology—the same design that earned some of the quietest decibel readings on record in independent testing. If you're building a subsonic 8.6 BLK rig or running full-power .338 Lapua loads, the DTF-STI delivers the suppression and lightweight handling that separate a purpose-built setup from a compromise.
Titanium construction keeps weight to a minimum while handling the heat from sustained fire. The suppressor accepts both Bravo-pattern and 1-3/8"-24 mounts, giving you flexibility across different host rifles. Direct-thread options are available separately for dedicated applications. The graphite black finish resists corrosion and blends with modern rifle aesthetics. Diligent Defense Co backs the unit with a no-nonsense lifetime warranty as long as you follow the recommended barrel-length minimums and firing schedules—a commitment to quality that shows confidence in the design.
Whether you're hunting with heavy subsonic loads, pushing supers downrange at the range, or setting up a dedicated 8.6 platform, the DTF-STI occupies a specific role: maximum suppression in a lightweight package. The Enticer baffle geometry is proven to deliver, and the titanium construction means you won't feel it hanging on your rifle. This is a suppressor for the shooter who understands the caliber and won't compromise on sound signature or portability.
| Caliber Range | Up to .338 Lapua Magnum / 8.6 Blackout (0.400" bore) |
| Material | Titanium |
| Length | 6-3/4" |
| Diameter | 1-5/8" |
| Weight | 9.2 oz |
| Mount Options | Bravo-pattern or 1-3/8"-24 thread (direct-thread M18 x 1.5 available separately) |
| Finish | Graphite Black |
| Recommended Minimum Barrel Length (.338 LM) | 22" |
| Recommended Minimum Barrel Length (8.6 BLK Subs) | 8" |
| Recommended Minimum Barrel Length (8.6 BLK Supers) | 12" |
| Firing Schedule (.338 LM) | 10 shots before cool-down |
| Firing Schedule (8.6 BLK Subs) | Unlimited (maintain below 800°F) |
| Firing Schedule (8.6 BLK Supers) | 30 shots before cool-down (maintain below 800°F) |
| Warranty | Lifetime (when barrel length and firing schedules are followed) |
| Included Accessories | DDC sticker |
The DTF-STI is rated for calibers up to .338 Lapua Magnum and 8.6 blackout with a 0.400" bore. It's designed specifically for the 8.6 BLK community, handling both subsonic and supersonic loads within the recommended firing schedules and barrel-length minimums.
The DTF-STI accepts both Bravo-pattern mounts and 1-3/8"-24 thread attachments. Direct-thread options in M18 x 1.5 titanium are available separately for dedicated 8.6 BLK applications.
It depends on your load. With 8.6 BLK subsonic ammunition, you can fire unlimited rounds as long as you keep the suppressor below 800°F. Supersonic 8.6 BLK requires a cool-down period after every 30 shots. With .338 Lapua, allow a cool-down after 10 shots.
Diligent Defense Co includes a lifetime warranty as long as you follow the recommended barrel-length minimums for your caliber and stay within the firing schedules. The warranty is voided if these parameters are not followed.
