The Suppressor That Keeps Your Factory Sights.

First time buying a suppressor? Start here.

The Slim 9 is built for shooters who want a pistol suppressor that stays quiet, cycles reliably, and keeps factory-height sights fully usable. Its slim 1.125" diameter gives you a clear sight picture without requiring elevated or suppressor-height sights. This is performance built around the way real shooters run their pistols.

The Slim 9 uses advanced gas-flow design to strip, cool, and reduce pressure behind each shot. The result is excellent sound reduction with minimal backpressure and dependable cycling across a wide range of semi-auto handguns. Accuracy remains consistent from the first round to the last, even during longer shooting sessions.

The suppressor features a modular two-length design that lets you tailor performance to your needs. Run the short 6.25" configuration for better handling, or attach the extended 8.25" module for increased suppression. Both remain lightweight, with total system weights of 6oz to 7.5oz.

Each Slim 9 includes the smallest and lightest booster on the market. The booster and Nielsen device ensure reliable cycling on tilt-barrel pistols. A direct-thread adapter is available separately for fixed-barrel platforms such as pistol caliber carbines and subguns.

Constructed from high-purity Ti64V ELI Grade 23 titanium and finished in Cerakote C-Series, the Slim 9 offers strength, heat resistance, and long-term durability. The fully serviceable core allows you to open, clean, and maintain the suppressor for consistent performance over years of use.

Quiet operation, reliable cycling, modular flexibility, and unmatched sight compatibility make the Slim 9 a leading choice for anyone running a suppressed pistol.

Whisperstrike does not sell or ship suppressors to California, Delaware, District of Columbia, Hawaii, Illinois, Massachusetts, New York, New Jersey, or Rhode Island.