The Whisperstrike Slim 9 9mm Pistol Suppressor in Olive Drab is built around a 1.125-inch body that keeps factory sights usable, so a carry or range pistol does not need elevated sights. It is a modular two-length can, run short at 6.25 inches or extended to 8.25 inches, and it includes the booster for tilt-barrel pistols. The core is fully serviceable, so you can open it up and clean it.

Key Specifications

• Caliber is 9mm, with .380, .32 ACP and 22LR also listed by the maker.
• Diameter is 1.125 inches, which leaves factory-height sights usable.
• Length is 6.25 inches short or 8.25 inches extended, with the booster.
• Weight is 6 ounces short or 7.5 ounces extended, with the booster.
• It is built from titanium with a Cerakote C-Series finish and a fully serviceable core.

Frequently Asked Questions

Do I need ATF approval to buy this? No. As of October 9, 2026, ATF no longer requires Form 4 approval, registration or a tax stamp for suppressors. It transfers on a Form 4473 with a background check through a Class 3 (SOT) dealer. State and local laws still apply.

Is the booster included? Yes. Each Slim 9 includes a 1/2×28 booster, which helps tilt-barrel pistols cycle reliably.

Buy the Whisperstrike Slim 9 9mm Pistol Suppressor, Olive Drab

As of October 9, 2026, this suppressor transfers on a Form 4473 with a background check at your Class 3 (SOT) dealer, with no Form 4 or tax stamp; state and local laws still apply. Order through Whisperstrike’s suppressors lineup and our Lubbock, Texas team will handle the transfer.