What Is the Striker Control Device?

Langdon Tactical has resumed production of the Striker Control Device for Glock pistols.

posted on May 11, 2022
Langdon Tactical Striker Control Device

As our Handguns Editor Tamara Keel is fond of saying, safety is not a binary condition. Often, we tend to view it like the selector on a firearm: Safe or [Not Safe], when in reality, there’s a wide range in which one can be safe or, well, less safe. One device that slides the needle farther down the “Safe” side is the Striker Control Device (SCD), which is now being produced by Langdon Tactical.

What is it, you ask? It is, quite simply, a device that lets you know when the striker of your Glock is moving. That’s it. It plays no role in the firing procedure whatsoever, a frequent concern voiced when the SCD first came out that was centered on the device malfunctioning. Rather, it exists solely to let the user know when the striker is moving. As for malfunctioning, well, the SCD is comprised of exactly three pieces: two plates on a hinge. Can it fail? I mean, I suppose so; it’s a mechanical device and the possibility exists. However, the SCD is analogous to a door hinge—how often do you see those fail?

Striker control device

Why is this important? Well, ordinarily, it isn’t—right up until it is. Should something find its way into the trigger guard when reholstering, this is when bad, loud unexpected things can happen. A shirttail, a sweatshirt pull string you forgot to cut off, a random piece of detritus, your finger …  Any number of items could conceivably find their way into the holster right around the time you’re putting your firearm away. It’s rare, yes, but it can happen. With the SCD, you holster with your strong-hand thumb on the back of the slide, over the SCD. If the trigger were to catch, initiating a pull, you’ll feel the SCD moving (or, trying to move) under your thumb. Full stop, that’s all the SCD does.

It’s analogous to putting your thumb on the back of a hammer, either on a revolver with an exposed hammer or a DA/SA semi-auto like a Beretta 92 or SIG Sauer 226. Should the trigger catch on anything, your thumb will feel the hammer starting to move rearward. Ditto putting your thumb over the cocked hammer of a 1911 or Hi Power, for that matter (although, technically, that’s to stop the hammer from falling). The SCD provides a mechanical means of detecting when the striker is in motion.

And, that’s really all it is. When holstering your Glock pistol, you place your thumb over the SCD just like you would an exposed hammer. Should something manage to get in the trigger guard, at the very least you’d be alerted to movement of the striker before an unexpected loud noise. The SCD doesn’t affect operation of the handgun in any way, and is really only a net positive. It was a good idea when Tau Development Group was producing it, it’s still a good idea with Langdon Tactical.

MSRP on the Langdon Tactical Striker Control Device varies depending on the model of Glock handgun and ranges from $78.95 to $84.95. For more information or to order an SCD, visit langdontactical.com.


X Vision Thermal sight
X Vision Thermal sight

First Look: X-Vision Optics Thermal Reflex Sight

X-Vision Optics is releasing a new thermal reflex sight offering an excellent price to performance ratio and also designed with versatility in mind.

First Look: Hornady RAPiD Security Safe Keypad Vault

Keep your defensive firearm is secure and away from prying hands.

First Look: High Speed Gear Vigil EDC Belt

A durable and low-profile belt that helps you carry your gear without standing out from the crowd.

First Look: Mesa Tactical Sureshell Carrier with RMR Mount

Mount a red dot to your shotgun and keep your spare shotgun ammo close at hand.

The Best of the Blowbacks: Mauser HSc and the Heckler & Koch Model 4

In the April 2022 issue of Shooting Illustrated, this column looked at my all-time favorite carry gun, the Colt Model M or 1903/1908. This month we look at my favorite European semi-automatic, the Mauser HSc and its cousin, the Heckler & Koch Model 4.

Wilson Acquires New Ultralight Arms

The bolt-action rifle manufacturer joins other companies such as Lehigh Defense and Chip McCormick Customs.


Get the best of Shooting Illustrated delivered to your inbox.